Apps that use cosmic-comp's headerbar are incosistent with the rest of apps

[nabrious0]

COSMIC apps have colored window controls (according to system accent color) and when hovering over one, your cursor turns into a pointer.

Apps like Discord (Vesktop) or any app that relies on COSMIC's titlebar doesn't follow this (non-colored window control buttons and cursor state does not change on hover)

Also, when dragging a window, on COSMIC or GTK apps your cursor changes into the "Grab" variant, on these apps it does not.

[Drakulix]

Most likely cosmic-comp needs an update for it's libcosmic version again to match cosmic apps. Thanks for bringing this to my attention.

[WatchMkr]

Here's the header design for reference (icons/text are @on_bg_color at 75% opacity) https://www.figma.com/file/SkAtS5qlVOGQC0n895AHzX/Design-System-(WIP)?node-id=12298-80459&mode=dev

(unfocused libcosmic apps don't currently match the design)