[wasm] un-skip Wasm atomic op tests on big-endian

Support was added to big endian machines (PPC/AIX and S390)
using the following CLs:

TurboFan fixes:
https://crrev.com/c/3313444
https://crrev.com/c/3327721
Wasm Compiler fix:
https://crrev.com/c/3316032
cctest:
https://crrev.com/c/3302852

Change-Id: Ie20dcbe37d04b20d15aae724a82a204bd12baa2b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3329795Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#78350}

test/cctest/cctest.status

@@ -282,12 +282,7 @@
 
 ##############################################################################
 ['byteorder == big', {
-  # Skip Wasm atomic tests on big-endian machines.
-  # There is no support to emulate atomic Wasm operations on big-endian
-  # platforms, since this would require bit swapping as a part of atomic
-  # operations.
-  'test-run-wasm-atomics/*': [SKIP],
-  'test-run-wasm-atomics64/*': [SKIP],
+  # Peephole optimization not supported on big-endian machines.
   'test-regexp/Peephole*': [SKIP],
 }],  # 'byteorder == big'