Preserve copy_or_noop passthrough result

[M-Hassan-Raza]

This fixes a regression where copy_or_noop no longer passed the mapped key through when there was no active selection.

Window.copy_or_noop() already returns True in the no-selection case, and Boss.dispatch_action() uses exactly True to mean “do not consume this key”. The Boss.copy_or_noop() wrapper was calling the window method but not returning its result, so the True became None and the key was consumed.

I added a focused regression test for both paths: passthrough when the window returns True, and consumed when it returns False. The test is a little longer than the fix because it exercises the dispatcher behavior rather than just calling the wrapper directly. Happy to trim or reshape it if you prefer a smaller test.

Tested with:
./test.py --module keys
python3 -m py_compile kitty/boss.py kitty_tests/keys.py

[M-Hassan-Raza]

Hmmm I think the issue has been fixed upstream already? Great! I'll close the PR shortly in that case :D

[kovidgoyal]

This PR was actually merged, not sure why github didnt auto close it.