Add test for LazyShadowTreeRevisionConsistencyManager and fix bugs #44337
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Summary: Changelog: [internal] `LazyShadowTreeRevisionConsistencyManager` wasn't correctly updating the locked revision, because `emplace` is a no-op if there's already a value for the key in the `unordered_map`. This fixes the issue and adds tests that actually showed it. Reviewed By: sammy-SC Differential Revision: D56761941
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Summary:
Changelog: [internal]
LazyShadowTreeRevisionConsistencyManagerwasn't correctly updating the locked revision, becauseemplaceis a no-op if there's already a value for the key in theunordered_map.This fixes the issue and adds tests that actually showed it.
Reviewed By: sammy-SC
Differential Revision: D56761941