[tests] Mark debug/es6/debug-scope-default-param-with-eval as CRASH

It indexes a FixedArray out of bounds, accessing an arbitrary object which
happens to be in that location. Now the object can also be an in-place weak ref,
which will cause a crash when trying to use it.

BUG=v8:5651

Change-Id: I73e4169e573ecb23e383970d7db336be08f5903c
Reviewed-on: https://chromium-review.googlesource.com/1148055Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54632}

test/debugger/debugger.status

@@ -18,8 +18,9 @@
   'debug/es6/debug-promises/reject-with-invalid-reject': [FAIL],
 
   # Issue 5651: Context mismatch in ScopeIterator::Type() for eval default
-  # parameter value
-  'debug/es6/debug-scope-default-param-with-eval': [FAIL],
+  # parameter value (the test causes indexing a FixedArray out of bounds ->
+  # CRASH is also a reasonable outcome).
+  'debug/es6/debug-scope-default-param-with-eval': [FAIL, CRASH],
 
   # Slow tests
   'debug/debug-scopes': [PASS, SLOW],