steamcompmgr: Move 1x1 windows down the priority queue below override…

… redirects

Fixes Origin launcher being parented to a 1x1 centred window.

steamcompmgr: Fix transient following for maybe dropdowns

For Warframe language selection (but not specifically, this is just the right thing.)

steamcompmgr: Don't disable dynamic refresh when the QAM/Overlay come…

…s up

ime: use default keymap if possible

steamcompmgr: Make maybe_an_override path respect focus window's appi…

…ds and good candidate state

steamcompmgr: Bring back inputFocusMode 2

Now we have input split properly, we can have this again.

drm: add support for DP-MST connectors

These are created/destroyed dynamically by the kernel.

rendervulkan: Fix half pixel offset (again)

Some quick debugging code that I forgot to change properly.
Derp.

steamcompmgr: Make GAMESCOPE_DYNAMIC_REFRESH control the refresh rate…

… directly

steamcompmgr: cleanup on X11 error

The cleanup sequence run on X11 I/O error was incomplete. Let's
extract it to a function to make sure it doesn't go out-of-sync
again.