### What changes were proposed in this pull request?
This PR proposes to fix ORC predicate pushdown under case-insensitive analysis case. The field names in pushed down predicates don't need to match in exact letter case with physical field names in ORC files, if we enable case-insensitive analysis.
This is re-submitted for #29457. Because #29457 has a hive-1.2 error and there were some tests failed with hive-1.2 profile at the same time, #29457 was reverted to unblock others.
### Why are the changes needed?
Currently ORC predicate pushdown doesn't work with case-insensitive analysis. A predicate "a < 0" cannot pushdown to ORC file with field name "A" under case-insensitive analysis.
But Parquet predicate pushdown works with this case. We should make ORC predicate pushdown work with case-insensitive analysis too.
### Does this PR introduce _any_ user-facing change?
Yes, after this PR, under case-insensitive analysis, ORC predicate pushdown will work.
### How was this patch tested?
Unit tests.
Closes#29530 from viirya/fix-orc-pushdown.
Authored-by: Liang-Chi Hsieh <viirya@gmail.com>
Signed-off-by: HyukjinKwon <gurwls223@apache.org>
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