Remove zbus dependency in dark-light

This **significantly** reduces compile time and binary size on linux.
Depending on my fork is not ideal, I opened a PR upstream:
rust-dark-light/dark-light#40 but
rust-dark-light/dark-light#15 doesn't
give me confidence.

Cargo.toml

@@ -147,7 +147,7 @@ bitflags = "2.0"
 bytemuck = { version = "1.0", features = ["derive"] }
 bytes = "1.6"
 cosmic-text = "0.12"
-dark-light = "1.0"
+dark-light = { git = "https://github.com/bbb651/rust-dark-light.git", rev = "192daa06be5a0bad927e71c05a1e2eb5d9061c54" }
 futures = "0.3"
 glam = "0.25"
 glyphon = { git = "https://github.com/hecrj/glyphon.git", rev = "0d7ba1bba4dd71eb88d2cface5ce649db2413cb7" }

core/src/theme.rs

@@ -169,9 +169,8 @@ impl Default for Theme {
             static DEFAULT: Lazy<Theme> =
                 Lazy::new(|| match dark_light::detect() {
                     dark_light::Mode::Dark => Theme::Dark,
-                    dark_light::Mode::Light | dark_light::Mode::Default => {
-                        Theme::Light
-                    }
+                    dark_light::Mode::Light
+                    | dark_light::Mode::NoPreference => Theme::Light,
                 });
 
             DEFAULT.clone()