Make entering a rest switch to input mode

[AxelMatstoms]

Resolves: #24282

Entering a rest with the keyboard shortcut now automatically enters input mode and advances to the next note. This is arguably the expected behaviour, since inputing a note switches to input mode.

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[zacjansheski]

Tested on MacOS 14, Windows 11, Ubuntu 22.04.3. Approved
#24282 FIXED