Port away from old Kirigami List Items
Reason for the change
The old Kirigami list delegates are going away for KF6; we need to port away from them.
Depends on frameworks/qqc2-desktop-style!304 (merged) and frameworks/kirigami!1304 (merged).
Test plan
Used Elisa for a day or so with both desktop and Mobile mode with these changes. No visual or functional changes found.
Bugs fixed
Edited by Nate Graham