"no such index [null]" when indexing into data stream with op_type=index

[probakowski]

Elasticsearch version (bin/elasticsearch --version):
7.9, 7.10, 8.0
Plugins installed: []

JVM version (java -version):

OS version (uname -a if on a Unix-like system):

Description of the problem including expected versus actual behavior:
When you try to index document into data stream with op_type=index error message says no such index [null] instead of information that only op_type=create is allowed

Steps to reproduce:

PUT _index_template/ds
{
  "index_patterns": ["ds*"],
  "data_stream":{}
}

PUT ds/_doc/1
{
}

Provide logs (if relevant):

IndexNotFoundException[no such index [null]]
	at org.elasticsearch.cluster.metadata.IndexNameExpressionResolver.concreteIndices(IndexNameExpressionResolver.java:274)
	at org.elasticsearch.cluster.metadata.IndexNameExpressionResolver.concreteWriteIndex(IndexNameExpressionResolver.java:366)
	at org.elasticsearch.action.bulk.TransportBulkAction$ConcreteIndices.resolveIfAbsent(TransportBulkAction.java:626)
	at org.elasticsearch.action.bulk.TransportBulkAction$BulkOperation.addFailureIfIndexIsUnavailable(TransportBulkAction.java:579)
	at org.elasticsearch.action.bulk.TransportBulkAction$BulkOperation.doRun(TransportBulkAction.java:418)
	at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37)
	at org.elasticsearch.action.bulk.TransportBulkAction.executeBulk(TransportBulkAction.java:605)
	at org.elasticsearch.action.bulk.TransportBulkAction.doInternalExecute(TransportBulkAction.java:253)
	at org.elasticsearch.action.bulk.TransportBulkAction.doExecute(TransportBulkAction.java:169)
	at org.elasticsearch.action.bulk.TransportBulkAction.doExecute(TransportBulkAction.java:99)
	at org.elasticsearch.action.support.TransportAction$RequestFilterChain.proceed(TransportAction.java:179)
	at org.elasticsearch.action.support.ActionFilter$Simple.apply(ActionFilter.java:53)
	at org.elasticsearch.action.support.TransportAction$RequestFilterChain.proceed(TransportAction.java:177)
	at org.elasticsearch.xpack.security.action.filter.SecurityActionFilter.lambda$apply$0(SecurityActionFilter.java:87)
	at org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:63)
	at org.elasticsearch.xpack.security.action.filter.SecurityActionFilter.lambda$authorizeRequest$4(SecurityActionFilter.java:173)
	at org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:63)
	at org.elasticsearch.xpack.security.authz.AuthorizationService.lambda$runRequestInterceptors$15(AuthorizationService.java:353)
	at org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:63)

[elasticmachine]

Pinging @elastic/es-core-features (:Core/Features/Data streams)