[gardening] Skip flaky test lib_2/isolate/spawn_uri_nested_vm_test

Issue: https://github.com/dart-lang/sdk/issues/33385
Change-Id: If5bf03d61226baac8fe6a7a3e4642e3a69fe9e0d
Reviewed-on: https://dart-review.googlesource.com/59220
Reviewed-by: Zach Anderson <zra@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
diff --git a/tests/lib_2/lib_2_kernel.status b/tests/lib_2/lib_2_kernel.status
index 89cfa59..bef13c5 100644
--- a/tests/lib_2/lib_2_kernel.status
+++ b/tests/lib_2/lib_2_kernel.status
@@ -62,7 +62,9 @@
 
 [ $compiler == app_jitk && $mode == product ]
 isolate/spawn_function_custom_class_test: Skip # Timeout
-isolate/spawn_uri_nested_vm_test: Skip # Timeout
+
+[ $compiler == app_jitk && ($mode == product || $mode == release) ]
+isolate/spawn_uri_nested_vm_test: Skip # Timeout, Issue 33385
 
 [ $compiler != dart2js && $fasta && !$strong ]
 isolate/browser/compute_this_script_browser_test: CompileTimeError