gtk4-layer-shell must depend on wayland-protocols

Description:

When gtk4-layer-shell is not linked against wayland-protocols it produces aberrant behaviour, including segfaulting when attempting to display a tooltip inside a layer shell window.

I have rebuilt in a chroot with wayland-protocols added to depends and confirmed that this resolves the issue, but I'm not certain whether it would be sufficient to add wayland-protocols only to makedepends instead - it's not easy for me to test without having wayland-protocols available at runtime.

Additional info:

• package version(s): 1.0.3-3
• link to upstream bug report, if any: https://github.com/wmww/gtk4-layer-shell/issues/24

Steps to reproduce:

With the current build of gtk4-layer-shell, open an application in a layer that contains a tooltip and observe segfault when hovering tooltip item. There is a minimal reproducer in the linked upstream issues.