This PR safe guards state store instances in case there are multiple KafkaStreams
instances present that have distinct application IDs but share State Store Names.
Change is backwards compatible: In case no KafkaStreams association of the thread
can be found, all local state stores are queried as before.
In case an associated KafkaStreams Instance is found, but required StateStore is
not found in this instance, a warning is issued but backwards compatibility is
preserved by looking up all state stores.
Store within KafkaStreams instance of thread is preferred over "foreign" store with same name.
Warning is issued if requested store is not found within KafkaStreams instance of thread.
The main benefit here is to get rid of randomly selecting stores across all KafkaStreams instances
in case a store is contained within multiple streams instances with same name.
Resolves https://github.com/spring-cloud/spring-cloud-stream-binder-kafka/issues/1161
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