Prevent blitting errors after canvas swap in RadioButtons and CheckButtons #30945
+17
−8
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This guards blitting-related functionality of RadioButtons and CheckButtons behind a
self.canvas.supports_blitcheck, so that we don't get errors when trying to call blitting functionality on canvases that don't support it.Note: RadioButtons and CheckButtons do still not fully support canvas swapping as they carry persitent state that depends on blitting capability ("animated"). This is currently not updated when canvases are changed. However, this should at most lead to incorrect rendering in some edge cases after canvas swap. It will not error out anymore.
In other words the "# TODO: make dynamic" is partially solved, and
reduced to a smaller problem outlined in the new TODO.
Closes #30575 (again), in particular this fixes the error during figure close in mne-tests reported in #30575 (comment)