[bug] ControllerTesterPage EmptyView is shown at wrong position

[J0EK3R]

I like your last commit on ControllerTesterPage very much - it's like my first idea about showing all attached controllers! :)

There is one little thing: the EmptyView is displayed although it's not empty (at wrong position)

The screenshot is taken from the WinUI-App.

[vicocz]

I am aware of that but it's obviously issue of MAUI, which is in general very buggy.

[vicocz]

Reopen if needed please.