Add info log between executing work failed and cleanup

[Abacn]

We've seen (internal bug: 367930654) pipeline stuck at closing reader indefinitely, but it is not obvious from worker log, apparently straggler detector does not work for closeReader.

This log is added so that worker log will print the actual cause of Exception before conducting clean up steps (e.g. closeReader for source, etc)

Please add a meaningful description for your change here

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[github-actions]

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[Abacn]

Java PreCommit failing testPubsubSinkOverride due to #32465 , not related to this change. opened a revert PR at #32572