Fix double unquoting in url dispatcher

#8898 now passes the unquoted path and we would
unquote it again

aiohttp/web_urldispatcher.py

@@ -498,9 +498,7 @@ def _match(self, path: str) -> Optional[Dict[str, str]]:
         if match is None:
             return None
         else:
-            return {
-                key: _unquote_path(value) for key, value in match.groupdict().items()
-            }
+            return {key: value for key, value in match.groupdict().items()}
 
     def raw_match(self, path: str) -> bool:
         return self._orig_path == path
@@ -654,7 +652,7 @@ async def resolve(self, request: Request) -> _Resolve:
         if method not in allowed_methods:
             return None, allowed_methods
 
-        match_dict = {"filename": _unquote_path(path[len(self._prefix) + 1 :])}
+        match_dict = {"filename": path[len(self._prefix) + 1 :]}
         return (UrlMappingMatchInfo(match_dict, self._routes[method]), allowed_methods)
 
     def __len__(self) -> int:
@@ -1286,10 +1284,6 @@ def _quote_path(value: str) -> str:
     return URL.build(path=value, encoded=False).raw_path
 
 
-def _unquote_path(value: str) -> str:
-    return URL.build(path=value, encoded=True).path.replace("%2F", "/")
-
-
 def _requote_path(value: str) -> str:
     # Quote non-ascii characters and other characters which must be quoted,
     # but preserve existing %-sequences.