XWayland: root size change notify behavior is not consistent

Affected version

Fedora 36 (Rawhide) / GNOME Shell 42.alpha

Bug summary

I did a follow up testing after fixing !731 (merged) and noticed a few issues:

1. There is no event when you are trying to change to native resolution from another.
2. XRRScreenChangeNotifyEvent always has native resolution reported.
3. It might be a minor one, but on X11 session there is no events reported if you are trying to change to the same resolution.

Steps to reproduce

screenSizeChangeEvent.c

Run gcc screenSizeChangeEvent.c -o screenSizeChangeEvent -lX11 -lXrandr && ./screenSizeChangeEvent

Relevant logs, screenshots, screencasts etc.

Please see logs from the test above. I've added some comments to them started with ////.

xwl.log XWayland session

x11.log X11 session