Change plasma-meta -> -desktop. (#4076)

This avoids to pull in sddm-kcm (to respect user's choice of login manager)
And to not pull in discover and related tools that should also be up to the user.

archinstall/default_profiles/desktops/plasma.py

@@ -12,7 +12,7 @@ class PlasmaProfile(XorgProfile):
 	@override
 	def packages(self) -> list[str]:
 		return [
-			'plasma-meta',
+			'plasma-desktop',
 			'konsole',
 			'kate',
 			'dolphin',