Remove deprecated MainView property automaticOrientation

Lothar Kettererrequested to merge
lk108/ut-app-meta-template:lk108/remove-deprecated-automaticOrientation into master

Most Main.qml templates set the MainView property automaticOrientation. However, this property is deprecated, and setting it to true, as the templates do, can lead to strange errors. For example, a QtQuick.Controls ToolTip inside a LUITK Popover may be displayed rotated by 90 degrees in some settings like a Wayland environment on a desktop.

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