Fix Edit MIDI Mapping Dialog Accessibility

[shubham-shinde-442]

Resolves: #23945

Fixed Edit MIDI Mapping Dialog Accessibility.

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[Eism]

looks like there are extra spaces before "name"

[DmitryArefiev]

Tested on Win/Mac

@shubham-shinde-442 Can you also add screen reading for 'waiting' field right after you add something from MIDI keyboard?
Now it works when you navigate to other buttons and then go back

bandicam.2024-08-09.17-12-56-257.mp4

[shubham-shinde-442]

For this, I believe we should implement a similar approach which discussed here. @Eism, Am I heading in the right direction?

[Eism]

For this, I believe we should implement a similar approach which discussed here. @Eism, Am I heading in the right direction?

EditMidiMappingDialog is very similar to EditShortcutDialog, I see that this problem is solved for shortcuts. I think, you should look at how it is done and apply the same approach for MIDI