Change merge-if-exists logic to properly report changes #34337
Merged
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What does this PR do?
Changes the merge-if-exists logic to use a simple dict.update() and properly reports no changes if the content does not need to be changed.
Previous Behavior
merge-if-exists would report changes on every run, whether or not changes were necessary.
New Behavior
Uses a simple dict.update to compare the serialized data before and after applying the changes and only reports changes and writes to the file if the dicts are not equal.
Tests written?
No
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