Fix batch_append and batch_update bust version chain if upsert #2661
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Reference Issues/PRs
https://man312219.monday.com/boards/7852509418/pulses/9903341116
What does this implement or fix?
Existing code incorrectly assumes when the symbol being upsert is not live, it has never existed. So the version being upserted has always been set to 0.
But the symbol could exist but deleted at that moment. So the version being upserted has always been set to 0. If so, this will bust the version chain.
This PR also fixes exception thrown in writing version keys being swallowed
Any other comments?
Checklist
Checklist for code changes...