clear previous selection on focus change

[databasedav]

just bringing back the selection clearing behavior i introduced here #2 which got removed at some point (was that intentional?), ported to using the action queue with a new TextInputEdit::SetSelection variant

tested using the multiple inputs example

also ran cargo fmt and fixed a clippy issue

[ickshonpe]

Yes it was deliberate/ I don't have a strong opinion either way but most text inputs and editors seem to preserve the previous selection when switching focus. Maybe it could be a configurable behaviour.

[databasedav]

o interesting, i suppose our samples are just different, vscode and discord don't (as far i can tell, on ubuntu for context) for example, but totally fair

i will still need the new TextInputEdit::SetSelection variant though if we want to move in the direction of not having to operate on the underlying Editor directly, but i'm fine with whatever :)

[databasedav]

just realized that vscode has both behaviors, for the search inputs, previous selections are cleared, but for selections in different file windows, the selection background is maintained for previous selections, but with a different color