Make MS recognise the `.mscz~` filetype

[silvncr]

Your idea

MuseScore should be able to recognise and open its own backup filetype (.mscz~).

Problem to be solved

The user should not have to manually rename the file and remove the tilde just for the program to recognise it.

Cannot read file [path to file].mscz~
Unknown filetype

The file's content is exactly the same as a .mscz file (by design).

Prior art

No response

Additional context

No response

Checklist

• This request follows the guidelines for reporting issues
• I have verified that this feature request has not been logged before, by searching the issue tracker for similar requests

[gracetai26]

Hello, I'm a student in a university software engineering course and for our final project, we contribute to an open-source project. This seems like a perfect task to work on. Could I please be assigned to this issue?

[gracetai26]

I have submitted a fix for this issue. You can view the Pull Request here: #31352