Cannot resolve output mapping incident on a none end event

[npepinpe]

Describe the bug

There was an incident in one of the chaos test models, where a none end event had an output mapping referencing a non-existent variable source to be mapped to target. I resolved the incident by adding a dummy variable (the mapping should not have been there anyway), but then the process was stuck on the none end event.

See https://bru-2.operate.camunda.io/eeef5734-cfd6-47a5-a2ed-5fe13269e589/processes/2251799815205221

To Reproduce

Add the following test case to io.camunda.zeebe.engine.processing.incidentOutputMappingIncidentTest:

          {
            "None end event",
            ENGINE
                .deployment()
                .withXmlResource(
                    Bpmn.createExecutableProcess(PROCESS_ID)
                        .startEvent()
                        .endEvent("endEventId", b -> b.zeebeOutputExpression("foo", "bar"))
                        .done()),
            "endEventId",
            false
          },

Expected behavior

I can resolve incidents on a none end event.

Environment:

• Zeebe Version: 8.2.3
• Configuration: SaaS - G3 S

[korthout]

As a workaround, users can use Process Instance Modification to re-activate the end event

[korthout]

ZPA triage:

• should be simple to resolve good-first-issue (just implement the onComplete method on NoneEndEventBehavior in the EndEventProcessor)
• since it's low-hanging fruit and may effect users we would like to tackle it sooner than later.