[Spark] Properly handle dots in column names in implicit casts in streaming writes #5285
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Description
Fix a bug that causes streaming writes to a Delta table to fail when one the column names contains dots ('.'). This occurs when implicit casting is enabled, and we attempt to reconcile the input data types with the data types in the table schema.
How was this patch tested?
Added a test covering the issue
Does this PR introduce any user-facing changes?
No