[SYCL][E2E] Disable copy_subregion_2D.cpp on DG2 (#20464)

Failing in postcommit

Ex
https://github.com/intel/llvm/actions/runs/18783995211/job/53599884723

---------

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: arch-intel_gpu_bmg_g21 || arch-intel_gpu_lnl_m
+// UNSUPPORTED: arch-intel_gpu_bmg_g21 || gpu-intel-dg2 || arch-intel_gpu_lnl_m
 // UNSUPPORTED-INTENDED: sporadic failure in CI
 //                       https://github.com/intel/llvm/issues/20006
 // XFAIL: linux && arch-intel_gpu_acm_g10 && level_zero_v2_adapter