Disable Vello renderer checkbox in preferences if browser doesn't support WebGPU (#1844)

* Disable vello checkbox if no wgpu support is available

* Fix compile error

* Check wgpu status on every diagogue open

* Execute graph on settings change

* Remove tooltip and disabled status from settings category

---------

Co-authored-by: Keavon Chambers <keavon@keavon.com>

editor/src/messages/preferences/preferences_message_handler.rs

@@ -14,9 +14,13 @@ impl PreferencesMessageHandler {
 	pub fn editor_preferences(&self) -> EditorPreferences {
 		EditorPreferences {
 			imaginate_hostname: self.imaginate_server_hostname.clone(),
-			use_vello: self.use_vello,
+			use_vello: self.use_vello && self.supports_wgpu(),
 		}
 	}
+
+	pub fn supports_wgpu(&self) -> bool {
+		graph_craft::wasm_application_io::wgpu_available().unwrap_or_default()
+	}
 }
 
 impl Default for PreferencesMessageHandler {