A use-site `changed has-focus` on a std-widgets LineEdit/TextEdit never
fires — has-focus is an alias into the inner TextInput (slint#7747) — so
typing a letter that doubles as a shortcut ran the action instead of
inserting the character. Sweep every text-input surface (search, import,
create/edit playlist & folder, tag editor, colour picker, settings
fields, QConnect dev modal, kiosk shell) and drive
UiFocusState.text-input-focused from a `guard-focused` probe property
that the change tracker does observe.
cc
vicrodh
c4ddca0223