[SYCL][Graph] Disable graph tests failing on Arc (#13360)

- Temporarily disable tests failing on Arc in post-commit CI while the
issue is investigated

Failing tests reported and and issue tracked in #13301

Author: Bensuo

sycl/test-e2e/Graph/RecordReplay/valid_no_end.cpp

@@ -5,6 +5,7 @@
 // Extra run to check for immediate-command-list in Level Zero
 // RUN: %if level_zero && linux %{env SYCL_PI_LEVEL_ZERO_USE_IMMEDIATE_COMMANDLISTS=1 %{l0_leak_check} %{run} %t.out 2>&1 | FileCheck %s --implicit-check-not=LEAK %}
 //
+//UNSUPPORTED: gpu-intel-dg2
 
 // Tests obtaining a finalized, executable graph from a graph which is
 // currently being recorded to without end_recording() being called.

sycl/test-e2e/Graph/ValidUsage/empty_graph.cpp

@@ -4,6 +4,8 @@
 // RUN: %if level_zero %{env SYCL_PI_LEVEL_ZERO_USE_IMMEDIATE_COMMANDLISTS=0 %{l0_leak_check} %{run} %t.out 2>&1 | FileCheck %s --implicit-check-not=LEAK %}
 // Extra run to check for immediate-command-list in Level Zero
 // RUN: %if level_zero && linux %{env SYCL_PI_LEVEL_ZERO_USE_IMMEDIATE_COMMANDLISTS=1 %{l0_leak_check} %{run} %t.out 2>&1 | FileCheck %s --implicit-check-not=LEAK %}
+//
+// UNSUPPORTED: gpu-intel-dg2
 
 // Tests the ability to finalize and submit a command graph which doesn't
 // contain any nodes.