[AMD] Skip scaled_dot tests for gfx11 and gfx12 (#5008)

`scaled_dot` is not yet implemented on `gfx11` and `gfx12`
so disable unit tests for now.

python/test/unit/language/test_core.py

@@ -3343,6 +3343,9 @@ def test_scaled_dot(M, N, K, col_a, col_b, type_a, type_b, num_warps, mma, kpack
             pytest.skip(f"scaled_dot({type_a}, {type_b}) not yet implemented for HIP")
         if mma == 16 and K == 64:
             pytest.skip(f"K == {K} too small for mfma {mma} in scaled_dot")
+        arch = triton.runtime.driver.active.get_current_target().arch
+        if "gfx11" in arch or "gfx12" in arch:
+            pytest.skip("scaled_dot not yet implemented for gfx11 and gfx12")
 
     @triton.jit
     def dot_scale_kernel(a_base, stride_a0, stride_a1, a_scale, b_base, stride_b0, stride_b1, out,