[rocm-libraries] ROCm/rocm-libraries#8202 (commit 0911fa0)

[GFX1250][CK_TILE] Add scale16 (ScaleBlockSize=16) support to
 MX GEMM TDM pipeline (#8202)

Enables `ScaleBlockSize=16` end-to-end for the FP8/BF8 MX GEMM TDM
pipeline, building on the scale16 warp-gemm layer already in develop.

- **warp gemm:** add the 32x32x128 f8f6f4 scale16 traits and alias (2x2
grid of 16x16x128 scale16 intrinsic calls with per-subtile
`SCALE_OPSEL`), and route 32x32 f8f6f4 through the dispatcher's
`IsScale16` path.
- **default policy:** select the warp gemm via the dispatcher with
`IsScale16=(ScaleBlockSize==16)` so `WarpTile=16` and `WarpTile=32` each
pick the matching scale16 path; guard WarpTile M/N to 16 or 32;
scale-tile distribution for the scale16 layout.
- **pipeline V1/V2:** thread `Problem::ScaleBlockSize` through the
scale-window setup (replacing the hardcoded 32); expose `ScaleBlockSize`
for the kernel.
- **block gemm:** extract int64 (scale16) / int32 (scale32) scales by
width.
- **kernel:** scale16 descriptor order; reject unsupported
`BlockScaleSize`.

Test coverage for this path is in the stacked follow-up PR.