@command does not work in python 3.12

[d-perl]

The resulting function fails an isinstance for WrappedMethod so _get_single_mapping does not add it to the Mapping

Steps To Reproduce

Steps to reproduce the behaviour:

1. Create a Controller with a @command method in python 3.12
2. Observe that there is no PV created for it

this is also reflected in tests/backends/epics/test_gui.py::test_get_components

Acceptance Criteria

• The @command decorator can be used in python 3.12

[GDYendell]

Thanks @dperl-dls ! Currently we are pinned <3.12 because softioc was not compatible, but I think that is resolved now, so we should unpin and fix what breaks.

[d-perl]

Yeah, most stuff does just work, I was running on 3.12 generally successfully and got surprised when my commands were not resulting in generated PVs in the IOC. I tried running the tests on 3.12 yesterday when writing this issue and only a couple failed

[GDYendell]

This is because the way runtime_checkable Protocols are tested has changed and don't seem to work on methods anymore.

The way Methods are handled is refactored in #87, so that branch works with 3.12. But, it needs further work.