Desktop: Move preferences persistence to native (#3138)

* Move preference persistence to native

* Pass preferences as struct instead of serialized to string

frontend/wasm/src/editor_api.rs

@@ -415,6 +415,11 @@ impl EditorHandle {
 
 	#[wasm_bindgen(js_name = loadPreferences)]
 	pub fn load_preferences(&self, preferences: String) {
+		let Ok(preferences) = serde_json::from_str(&preferences) else {
+			log::error!("Failed to deserialize preferences");
+			return;
+		};
+
 		let message = PreferencesMessage::Load { preferences };
 
 		self.dispatch(message);