[regexp] Make the interpreter backtracking stack growable

The backtracking stack (which is actually a generic stack) used to be
statically sized. At 10k elements, it was fairly large, but still easy
to overflow on large subject strings. This CL changes it to a
std::vector-based implementation instead which grows on-demand.

Drive-by: Add braces to the BYTECODE cases to make clang-format
produce a nicer output.

Bug: v8:8776
Change-Id: If41a444fe3d05f6d5be1be019129788a86e6118b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1634914Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61912}

test/test262/test262.status

@@ -1201,13 +1201,6 @@
   'built-ins/SharedArrayBuffer/length-is-too-large-throws': [SKIP],
 }],  # asan == True or msan == True or tsan == True
 
-['variant == interpreted_regexp', {
-  # Call stack exceeded: https://crbug.com/v8/8678
-  'built-ins/RegExp/CharacterClassEscapes/character-class-non-digit-class-escape-plus-quantifier-flags-u': [SKIP],
-  'built-ins/RegExp/CharacterClassEscapes/character-class-non-whitespace-class-escape-plus-quantifier-flags-u': [SKIP],
-  'built-ins/RegExp/CharacterClassEscapes/character-class-non-word-class-escape-plus-quantifier-flags-u': [SKIP],
-}],  # variant == interpreted_regexp
-
 ##############################################################################
 ['variant == jitless', {
   # https://crbug.com/v8/7777