[wasm] Add guard regions to end of WebAssembly.Memory buffers

test/mozilla/mozilla.status

 # Copyright 2011 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 981 matching lines @@
   'js1_5/extensions/regress-336410-1': [SKIP],
 
   #BUG(3152): Avoid C stack overflow.
   'js1_5/extensions/regress-355497': [FAIL_OK, 'Flags: --sim-stack-size=512'],
 }],  # 'arch == arm64 and simulator_run == True'
 
 ['variant == asm_wasm', {
   '*': [SKIP],
 }],  # variant == asm_wasm
 
+['variant == wasm_traps', {
+  '*': [SKIP],
+}],  # variant == wasm_traps
+
 ]