Add error returns to inttrablock state #12926
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This PR adds error returns to intrablock state calls so that errors are consistently returned to the caller code.
Previously several of these where just swallowed by the implementation.
This is necessary for parallel execution processing which needs to be able to distinguish between retryable errors due to parallel data access from system and other fails which need to stop processing.
Without this the code goes into a continuous retry of fail loop.