dirstate: remove the python-side whitelist of allowed matchers

This whitelist is too permissive because it allows matchers that contain
disallowed ones deep inside, for example through `intersectionmatcher`.

It is also too restrictive because it doesn't pass through
some of the matchers we support, such as `patternmatcher`.

It's also unnecessary because unsupported matchers raise
`FallbackError` and we fall back anyway.

Making this change makes more of the tests use rust code path,
and therefore subtly change behavior. For example, rust status
in largefiles repos seems to have strange behavior.

mercurial/dirstate.py

@@ -1639,16 +1639,6 b' class dirstate:'
 
         use_rust = True
 
-        allowed_matchers = (
-            matchmod.alwaysmatcher,
-            matchmod.differencematcher,
-            matchmod.exactmatcher,
-            matchmod.includematcher,
-            matchmod.intersectionmatcher,
-            matchmod.nevermatcher,
-            matchmod.unionmatcher,
-        )
-
         if rustmod is None:
             use_rust = False
         elif self._checkcase:
@@ -1656,9 +1646,6 b' class dirstate:'
             use_rust = False
         elif subrepos:
             use_rust = False
-        elif not isinstance(match, allowed_matchers):
-            # Some matchers have yet to be implemented
-            use_rust = False
 
         # Get the time from the filesystem so we can disambiguate files that
         # appear modified in the present or future.