[rocm-libraries] ROCm/rocm-libraries#8487 (commit 06a73ba)

Skip tests on gfx11 that have intermittent failures

## Motivation

On gfx11, skip sporadic failures for any load_and_convert_tile case
where X and Y
differ. Same-type tuples (half/half, bf16/bf16, fp8/fp8) have been
stable.

## Technical Details

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## Test Plan

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## Test Result

Stress-tested on gfx11, gfx12, and gfx950 with 10000 iterations of the
tests. No remaining test failures were detected.

## Submission Checklist

- [x] Look over the contributing guidelines at
https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.