[PR #9098/94685fb6 backport][3.11] Remove extra MultiDictProxy wr…

…apper from ``BaseRequest.query`` (#9113)

**This is a backport of PR #9098 as merged into master
(94685fb).**

Co-authored-by: J. Nick Koston <nick@koston.org>

aiohttp/web_request.py

@@ -486,7 +486,7 @@ def raw_path(self) -> str:
     @reify
     def query(self) -> "MultiMapping[str]":
         """A multidict with all the variables in the query string."""
-        return MultiDictProxy(self._rel_url.query)
+        return self._rel_url.query
 
     @reify
     def query_string(self) -> str: