Add winit's wayland-csd-adwaita feature to Bevy's wayland feature (#8722)

# Objective

- Fix Wayland window client side decorations issue on Gnome Wayland,
fixes #3301.

## Solution

- One simple one line solution: Add winit's `wayland-csd-adwaita`
feature to Bevy's `wayland` feature.

Copied from
https://github.com/bevyengine/bevy/issues/3301#issuecomment-1569611257:
### Investigation
1. Gnome forced Wayland apps to implement CSD, whether on their own or
using some libraries like Gnome's official solution
[libdecor](https://gitlab.freedesktop.org/libdecor/libdecor). Many Linux
apps do this with libdecor, like blender, kitty... I think it's not
comfortable for Bevy to fix this problem this way.
2. Winit has support for CSD on
wayland(8bb004a1d9/Cargo.toml (L42)),
but Bevy disabled Winit's default features, thus no winit's
`wayland-csd-adwaita` feature. And Bevy's `wayland` feature doesn't
include winit's `wayland-csd-adwaita` feature so users can't get window
decorations on Wayland even with Bevy's `wayland` feature enabled.
3. Many rust UI toolkit, like iced, doesn't disable winit's
`wayland-csd-adwaita` feature.
### Conclusion and one Possible solution

Bevy disabled `winit`'s default features in order to decrease package
size. But I think it's acceptable to add `winit`'s `wayland-csd-adwaita`
feature to Bevy's `wayland` feature gate to fix this issue easily for
this only add on crate: sctk-adwaita.

crates/bevy_winit/Cargo.toml

@@ -10,7 +10,7 @@ keywords = ["bevy"]
 
 [features]
 trace = []
-wayland = ["winit/wayland"]
+wayland = ["winit/wayland", "winit/wayland-csd-adwaita"]
 x11 = ["winit/x11"]
 accesskit_unix = ["accesskit_winit/accesskit_unix"]