Use shared text system on Linux and Windows (#10098)

closes #10129
closes #10269

Release Notes:

- N/A

crates/gpui/src/platform/windows/platform.rs

@@ -57,7 +57,7 @@ pub(crate) struct WindowsPlatformInner {
     background_executor: BackgroundExecutor,
     pub(crate) foreground_executor: ForegroundExecutor,
     main_receiver: flume::Receiver<Runnable>,
-    text_system: Arc<WindowsTextSystem>,
+    text_system: Arc<CosmicTextSystem>,
     callbacks: Mutex<Callbacks>,
     pub raw_window_handles: RwLock<SmallVec<[HWND; 4]>>,
     pub(crate) dispatch_event: OwnedHandle,
@@ -155,7 +155,7 @@ impl WindowsPlatform {
         let dispatcher = Arc::new(WindowsDispatcher::new(main_sender, dispatch_event.to_raw()));
         let background_executor = BackgroundExecutor::new(dispatcher.clone());
         let foreground_executor = ForegroundExecutor::new(dispatcher);
-        let text_system = Arc::new(WindowsTextSystem::new());
+        let text_system = Arc::new(CosmicTextSystem::new());
         let callbacks = Mutex::new(Callbacks::default());
         let raw_window_handles = RwLock::new(SmallVec::new());
         let settings = RefCell::new(WindowsPlatformSystemSettings::new());