[testing] Convert some "preparser" tests into "message".

test/message/message.status

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@@ skipping 11 matching lines @@
 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 [
 [ALWAYS, {
   # All tests in the bug directory are expected to fail.
   'bugs/*': [FAIL],
+  # We don't parse RegExps at scanning time, so we can't fail on octal
+  # escapes (we need to parse to distinguish octal escapes from valid
+  # back-references).
+  'strict-octal-regexp': [SKIP],
 }],  # ALWAYS
 ['ignition == True', {
   # TODO(4680): Some source positions are off with Ignition.
   'default-parameter-tdz': [SKIP],
   'default-parameter-tdz-arrow': [SKIP],
   'destructuring-modify-const': [SKIP],
   'instanceof': [SKIP],
   'overwritten-builtins': [SKIP],
   'regress/regress-1527': [SKIP],
   'regress/regress-3995': [SKIP],
   'replacement-marker-as-argument': [SKIP],
 }],  # ignition == True
 ]