fix: avoid binding loop on invalid keys with direct lookup

Author: BobTheBuidler

async_lru/__init__.py

@@ -237,11 +237,7 @@ async def __call__(self, /, *fn_args: Any, **fn_kwargs: Any) -> _R:
 
         loop = asyncio.get_running_loop()
         key = _make_key(fn_args, fn_kwargs, self.__typed)
-        try:
-            cache_item = self.__cache.get(key)
-        except TypeError:
-            # Avoid binding loop affinity for invalid keys.
-            raise
+        cache_item = self.__cache.get(key)
         self._check_loop(loop)
 
         if cache_item is not None: