failed to search resource which has contained resources when partitioning is enabled

[dannyyyyS]

Describe the bug
ClassCastException throws when searching resource if the resource has "contained" resources. This issue only happens when partitioning is enabled and it's a SEARCH action. Service handle request successfully if using READ action like "fhir/DEFAULT/ServiceRequest/2"

error stack:

java.lang.ClassCastException: class org.hl7.fhir.r5.model.Specimen cannot be cast to class org.hl7.fhir.r4b.model.Resource (org.hl7.fhir.r5.model.Specimen and org.hl7.fhir.r4b.model.Resource are in unnamed module of loader org.springframework.boot.loader.LaunchedURLClassLoader @5e9f23b4)
	at org.hl7.fhir.r4b.hapi.rest.server.R4BBundleFactory.addResourcesToBundle(R4BBundleFactory.java:83)
	at ca.uhn.fhir.rest.server.method.BaseResourceReturningMethodBinding.createBundleFromBundleProvider(BaseResourceReturningMethodBinding.java:306)
	at ca.uhn.fhir.rest.server.method.BaseResourceReturningMethodBinding.doInvokeServer(BaseResourceReturningMethodBinding.java:386)
	at ca.uhn.fhir.rest.server.method.BaseResourceReturningMethodBinding.invokeServer(BaseResourceReturningMethodBinding.java:430)
	at ca.uhn.fhir.rest.server.RestfulServer.handleRequest(RestfulServer.java:1167)
	at ca.uhn.fhir.rest.server.RestfulServer.doGet(RestfulServer.java:416)
	at ca.uhn.fhir.rest.server.RestfulServer.service(RestfulServer.java:1870)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:750)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
	at org.springframework.web.servlet.resource.ResourceUrlEncodingFilter.doFilter(ResourceUrlEncodingFilter.java:67)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
	at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:96)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1789)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.base/java.lang.Thread.run(Thread.java:833)
2023-02-14 11:51:20.019 [http-nio-8080-exec-4] INFO  fhirtest.access [LoggingInterceptor.java:160] ERROR - GET http://192.168.209.130:19999/fhir/DEFAULT/ServiceRequest

To Reproduce
Steps to reproduce the behavior:

1. enable partitioning

partitioning:
      enabled: true
      allow_references_across_partitions: true
      partitioning_include_in_search_hashes: false

2. create a resource with contained resources on DEFAULT partition
   POST localhost:8080/fhir/DEFAULT

{
    "resourceType": "Bundle",
    "id": "100",
    "type": "transaction",
    "entry": [
      {
        "resource": {
          "resourceType": "Patient",
          "id": "101",
          "active": true,
          "name": [
            {
              "use": "official",
              "text": "Li Si",
              "family": "Li",
              "given": [
                "Si"
              ]
            }
          ],
          "gender": "male",
          "birthDate": "1999-01-01"
        },
        "request": {
          "method": "POST",
          "url": "Patient"
        }
      },
      {
        "resource": {
          "resourceType": "ServiceRequest",
          "status": "active",
          "intent": "order",
          "contained": [
            {
              "resourceType": "Specimen",
              "id": "1",
              "identifier": [
                {
                  "system": "http://example.org/specimen/org1",
                  "value": "BarNo-123"
                }
              ],
              "type": {
                "coding": [
                  {
                    "system": "http://example.org/specimen-type/org1",
                    "code": "01",
                    "display": "Serum"
                  }
                ]
              },
              "collection": {
                "collectedDateTime": "2015-08-16T06:40:17Z"
              }
            },
            {
              "resourceType": "Organization",
              "id": "2",
              "identifier": [
                {
                  "system": "http://example.org/orgs",
                  "value": "org2"
                }
              ],
              "name": "agency-org2"
            }
          ],
          "identifier": [
            {
              "system": "http://example.org/order/org1",
              "value": "order-123"
            }
          ],
          "code": {
            "coding": [
              {
                "system": "http://example.org/panels/org1",
                "code": "LYYP-0094"
              }
            ],
            "text": "CBC auto"
          },
          "subject": {
            "reference": "Patient/101"
          },
          "specimen": [
            {
              "reference": "#1"
            }
          ],
          "performer": [
            {
              "reference": "#2"
            }
          ]
        },
        "request": {
          "method": "POST",
          "url": "ServiceRequest"
        }
      }
    ]
  }

4. search resource that created before
   GET localhost:8080/fhir/DEFAULT/ServiceRequest
5. See error

Expected behavior
return resource like "partitioning-disable" does

Screenshots

Environment (please complete the following information):

• HAPI FHIR Version: v6.2.5
• OS: Docker Image
• Postman

Additional context