SNOW-2037930:Fix copy into with case insensitive option having the variant size limitation #16588

Job	Run time
Check linting	2m 46s
Type Checking	43s
Build Doc	50m 23s
Build Wheel File	12s
Test Local Testing Module py-macos-latest-3.10	16m 45s
Test Local Testing Module py-windows-latest-3.9	11m 11s
Test Local Testing Module py-ubuntu-latest-3.12	14m 7s
Test Local Testing Module py-windows-latest-3.11	12m 14s
Doctest AST (phase0) py-macos-latest-3.9	24m 28s
Test py-macos-latest-3.12-azure	38m 48s
Test py-ubuntu-latest-64-cores-3.10-azure	18m 32s
Test py-windows-latest-64-cores-3.12-gcp	40m 6s
Test py-macos-latest-3.9-aws	26m 46s
Test py-ubuntu-latest-64-cores-3.9-aws	22m 27s
Test py-ubuntu-latest-64-cores-3.12-aws	23m 17s
Test py-windows-latest-64-cores-3.11-gcp	30m 9s
Test modin-ubuntu-latest-64-cores-3.9-aws	54m 17s
Test AST Encoding py-windows-latest-3.11-aws	4m 14s
Test AST Encoding py-ubuntu-latest-3.11-aws	2m 47s
Test AST enabled (phase0) py-ubuntu-latest-3.9	22m 13s
Test modin-macos-latest-3.9-aws	29m 29s
Test modin extra without pandas extra py-macos-3.9-aws.	27m 19s
Test AST Encoding py-macos-latest-3.11-aws	1m 54s
Test modin-windows-latest-64-cores-3.11-gcp	11m 47s
Test modin-ubuntu-latest-64-cores-3.10-azure	47m 54s
Test AST enabled (phase0) py-ubuntu-latest-3.11	28m 25s
Test AST enabled (phase0) py-ubuntu-latest-3.12	28m 0s
Combine coverage	1m 43s
	9h 52m 56s

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