[CK_TILE][FMHA]Add new tile size for async (#3623)

* Revert "Revert "[CK_TILE][FMHA] Add new tile size for async (#3586)" (#3613)"

This reverts commit 8f75869408210cb85e9eb7ff639c4c9dad1331cb.

* Add new tile_size for async pipeline

Signed-off-by: Linjun-AMD <Jun.Lin@amd.com>

* Update include/ck_tile/ops/fmha/pipeline/block_fmha_pipeline_qr_ks_vs_async.hpp

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

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Signed-off-by: Linjun-AMD <Jun.Lin@amd.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>