[regexp] Use consistent map checks for fast paths

test/test262/test262.status

 # Copyright 2011 the V8 project authors. All rights reserved.
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 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
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@@ skipping 87 matching lines @@
   'language/statements/variable/binding-resolution': [FAIL],
 
   # https://code.google.com/p/v8/issues/detail?id=4253
   'language/asi/S7.9_A5.7_T1': [PASS, FAIL_OK],
 
   ###### BEGIN REGEXP SUBCLASSING SECTION ######
   # https://bugs.chromium.org/p/v8/issues/detail?id=5361
   'built-ins/RegExp/prototype/Symbol.replace/y-init-lastindex': [FAIL],
   'built-ins/RegExp/prototype/Symbol.replace/y-set-lastindex': [FAIL],
 
-  # https://bugs.chromium.org/p/v8/issues/detail?id=5123
-  'built-ins/RegExp/prototype/Symbol.replace/coerce-global': [FAIL],
-  'built-ins/RegExp/prototype/Symbol.replace/coerce-unicode': [FAIL],
-
   ###### END REGEXP SUBCLASSING SECTION ######
 
   # https://code.google.com/p/v8/issues/detail?id=4360
   'intl402/Collator/10.1.1_1': [FAIL],
   'intl402/DateTimeFormat/12.1.1_1': [FAIL],
   'intl402/NumberFormat/11.1.1_1': [FAIL],
 
   # https://bugs.chromium.org/p/v8/issues/detail?id=4895
   'built-ins/TypedArrays/internals/HasProperty/detached-buffer': [FAIL],
   'built-ins/TypedArrays/internals/Set/detached-buffer': [FAIL],
@@ skipping 510 matching lines @@
 
   # v8:5401
   'language/module-code/namespace/internals/set': [FAIL],
   'language/module-code/namespace/internals/define-own-property': [FAIL],
 
   # https://github.com/tc39/test262/issues/773
   'language/module-code/namespace/Symbol.iterator/values-binding-types_': [SKIP],
 }],  # variant == ignition or variant == ignition_staging or variant == ignition_turbofan
 
 ]