manifest: expose a version of the Class without interface decorator
The decorator confuse Pytype. Having the "raw" python class exposed will also
helps pytype when it get replaced by a native implementation. At least until we
start using `typing.Protocol` in the future.
= Mercurial XXX =
== New Features ==
== Default Format Change ==
These changes affect newly created repositories (or new clones) done with
Mercurial XXX.
== New Experimental Features ==
== Bug Fixes ==
== Backwards Compatibility Changes ==
== Internal API Changes ==
== Miscellaneous ==