[MU4 Task] Improve tooltip descriptions and design

[shoogle]

Tooltips are displayed when hovering the cursor over a UI element such as a button.

Tooltips can have a:

• Name
• Shortcut key combination (optional)
• Description (optional)

Some of the current names and descriptions are not ideal (e.g. "Note duration: Tie"). Names and descriptions can be edited in the file src/notation/internal/notationuiactions.cpp, possibly without help from the developers.

As discussed with @Tantacrul, we would also like to consider the following changes, which will require developer assistance:

1. Aligning the shortcut (+) to the right of the tooltip like shortcuts in the menus:

2. Allowing the description to extend over multiple lines when necessary:

Simply allowing it to grow wider is also an option, but we think multiple lines will work better for very long tooltips.

FYI, we often use the tooltip name and description as the "accessible name" and "accessible description" spoken by screen readers, though it is possible to use something else for the screen reader text where necessary.

[Tantacrul]

@shoogle - can we close this and move to 4.x safely, do you think?

[shoogle]

@Tantacrul, I guess this is really two issues:

1. Align the shortcut on the right.
   • This is a matter of taste really so certainly not urgent.
2. Prevent clipping of descriptions.
   • This is a bit janky (see screenshot) but it happens rarely and doesn't affect anything functional, so it's your call.

[Tantacrul]

Yeah, I guess that second one needs fixing. Cheers.

[Tantacrul]

@bkunda - when you've time, can you spec out the desired design? Then we can post that as a 4.x task. Once done, I'll change this to be a simple bug about tooltips needing to accommodate long strings.