[CK_TILE][GEMM] Fix eightwarp error & Add eightwarp unit test
(#4834)
## Motivation
The primary goal of this PR is to fix a critical issue in the EightWarps
implementation within ck_tile. Additionally, unit tests were added to
ensure that CI can detect errors.
## Test Plan
ninja test_tile_gemm_quant_abquant_eightwarps
./bin/test_tile_gemm_quant_abquant_eightwarps
## Test Result
All EightWarps related test cases in TestCkTileGemmABQuant completed
successfully without linker errors or validation mismatches.
## Submission Checklist
- [ ] Look over the contributing guidelines at
https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.
30702c9cbc