[AMD] Skip triton-to-gluon translator tests on RDNA3/RDNA4

[saeid-rostami]

python/test/unit/tools/test_triton_to_gluon.py fails on AMD RDNA3 (gfx11xx)
and RDNA4 (gfx120x) hardware because TranslatorTarget only enumerates the
gfx targets the translator currently supports. Every test in the file errors at setup with:

ValueError: 'gfx1201' is not a valid TranslatorTarget

(observed with 9 failures on a gfx1201/gfx1100 box).

This PR adds a module-level pytestmark that skips the file when
is_hip_rdna() is true, so CI / local runs on RDNA hardware are clean.

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