refactor(quickshell): drop the Persona names from the primitives

P5Panel, P5Button, P5Slider and P5Tooltip become Panel, ActionButton,
LevelSlider and Tooltip. ActionButton and LevelSlider avoid clashing
with QtQuick.Controls, which the ask panel imports.

quickshell/popouts/TrayMenu.qml

@@ -10,7 +10,7 @@ import "root:/components"
 // implementation, but that draws a stock widget popup — square corners, system
 // palette, no lean — hanging off the corner of a shell that has none of those
 // things. This walks the menu with QsMenuOpener instead and draws it as a
-// P5Panel, so a right click on a tray icon produces the same object language as
+// Panel, so a right click on a tray icon produces the same object language as
 // everything else on the rail.
 //
 // Dismissal is a Hyprland focus grab: click anywhere outside and the compositor