Make all buttons unfocused in the main dialog when opening a subdialog

[FrancRos31]

Your idea

When opening a subdialog, make all the main dialog buttons unfocused.

OK should be unfocused.

Problem to be solved

1.1.mp4

1.mp4

Prior art

No response

Additional context

No response

Checklist

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[cbjeukendrup]

The dialogs in these examples are QWidget dialogs, where we have little influence on the focus behaviour. We could keep it in mind though when rewriting the dialogs in QML.