wayland: Move hash algorithm to foldhash

At the moment, the wayland code uses ahash to perform hashing
in its various hash mas. This was done because ahash was seen as
the best default in the Rust community at the time. However, most
Rust crates (including `hashbrown`) have since moved to using
foldhash instead.

This move is done for two primary reasons:

- This reduces the number of dependencies in the tree for most GUI
  projects. As other projects use foldhash now, this removes ahash
  (as well as its five dependencies) from the tree.
- In most cases, foldhash is faster than ahash.

Signed-off-by: John Nunley <dev@notgull.net>

Cargo.toml

@@ -67,9 +67,9 @@ unicode-segmentation = "1.7.1"
 windows-sys = "0.61"
 
 # Linux dependencies.
-ahash = { version = "0.8.7", features = ["no-rng"] }
 bytemuck = { version = "1.13.1", default-features = false }
 calloop = "0.14.3"
+foldhash = { version = "0.2.0", default-features = false, features = ["std"] }
 libc = "0.2.64"
 memmap2 = "0.9.0"
 percent-encoding = "2.0"