[core] Fix stale file index cleanup

[huangxiaopingRD]

Purpose

Fix rewrite_file_index retaining stale index types when a column switches from one File Index type to another. Track configured index types per column and remove obsolete types during rewrite. Add regression coverage for Bloom Filter to Bitmap replacement.

Tests

Added regression tests for replacing stale File Index types during rewrite_file_index.

[JingsongLi]

• Both methods of calling the Bloom → Bitmap use case of the local RewriteFileIndexProcedureITCase failed.

• When the external index becomes a smaller embedded index, dataFileMeta.copy(byte[]) retains the old extraFiles, causing the old Bloom file to remain in the manifest and be read; the reverse switch may also retain the old embedded index.

• Both external and embedded storage fields need to be updated and cleaned up simultaneously. There are currently 10 failures in GitHub CI.

[huangxiaopingRD]

• Both methods of calling the Bloom → Bitmap use case of the local RewriteFileIndexProcedureITCase failed.
• When the external index becomes a smaller embedded index, dataFileMeta.copy(byte[]) retains the old extraFiles, causing the old Bloom file to remain in the manifest and be read; the reverse switch may also retain the old embedded index.
• Both external and embedded storage fields need to be updated and cleaned up simultaneously. There are currently 10 failures in GitHub CI.

@JingsongLi Thanks for your review. I have fixed the issue. Please review again.