Always skip mjsunit/external-backing-store-gc

No-try: true
Tbr: machenbach@chromium.org
Bug: v8:8169
Change-Id: I973494d9e714c22d255435caa1f35a359a5dd2d1
Reviewed-on: https://chromium-review.googlesource.com/1224437Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55862}

test/mjsunit/mjsunit.status

@@ -222,6 +222,9 @@
 
   # https://crbug.com/v8/7775
   'allocation-site-info': [SKIP],
+
+  # BUG(v8:8169)
+  'external-backing-store-gc': [SKIP],
 }],  # ALWAYS
 
 ['novfp3 == True', {
@@ -622,9 +625,6 @@
   'math-floor-of-div-nosudiv': [PASS, ['mode == debug', SKIP]],
   'unicodelctest': [PASS, ['mode == debug', SKIP]],
 
-  # BUG(v8:8169)
-  'external-backing-store-gc': [SKIP],
-
   # Setting the timezone and locale with environment variables unavailable
   'icu-date-to-string': [SKIP],
   'icu-date-lord-howe': [SKIP],