[SPARK-49010][SQL][XML] Add unit tests for XML schema inference case sensitivity #47494
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What changes were proposed in this pull request?
Currently, XML respects the case sensitivity SQLConf (default to false) in the schema inference but we lack unit tests to verify the behavior. This PR adds more unit tests to it.
Why are the changes needed?
This is a test-only change.
Does this PR introduce any user-facing change?
No
How was this patch tested?
This is a test-only change.
Was this patch authored or co-authored using generative AI tooling?
No