[compiler] Skip failing tests in single_generation mode

These should be reenabled when the underlying issue is fixed.

Bug: v8:7790,v8:12031
Change-Id: Id950cceaa10209b17c2857d61183a2394638d6fc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3068951
Auto-Submit: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76078}

test/mjsunit/mjsunit.status

@@ -1496,6 +1496,12 @@
   'compiler/test-literal-map-migration': [SKIP],
   'compiler/deopt-pretenure': [SKIP],
   'compiler/fast-api-sequences-x64': [SKIP],
+
+  # TODO(v8:12031): Reimplement elements kinds transitions when concurrent
+  # inlining.
+  'default-nospec': [SKIP],
+  'es6/collections-constructor-*': [SKIP],
+  'es6/map-constructor-entry-side-effect*': [SKIP],
 }], # single_generation
 
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