[SYCL][E2E] Disable copy_subregion_2D on Windows BMG (#20307)

Also failing sporadically on Win, see issue report
[here](#20006 (comment))
and [here](#20302).

Signed-off-by: Sarnie, Nick <[email protected]>

Author: sarnex

sycl/test-e2e/bindless_images/copies/copy_subregion_2D.cpp

@@ -1,5 +1,5 @@
 // REQUIRES: aspect-ext_oneapi_bindless_images
-// UNSUPPORTED: linux && arch-intel_gpu_bmg_g21
+// UNSUPPORTED: arch-intel_gpu_bmg_g21
 // UNSUPPORTED-INTENDED: sporadic failure in CI
 //                       https://github.com/intel/llvm/issues/20006
 // XFAIL: linux && arch-intel_gpu_acm_g10 && level_zero_v2_adapter