Use error codes for type ignores (#8280)

Disable reportSelfClsParameterName for pytype as this is out of typeshed's
control

Closes: #7497

stdlib/importlib/metadata/__init__.pyi

@@ -170,7 +170,7 @@ class MetadataPathFinder(DistributionFinder):
     def find_distributions(cls, context: DistributionFinder.Context = ...) -> Iterable[PathDistribution]: ...
     if sys.version_info >= (3, 10):
         # Yes, this is an instance method that has argumend named "cls"
-        def invalidate_caches(cls) -> None: ...  # type: ignore
+        def invalidate_caches(cls) -> None: ...
 
 class PathDistribution(Distribution):
     def __init__(self, path: Path) -> None: ...