Fix inline rename during IME composition (#519)

packages/ui/src/components/tree/keyboard.ts

@@ -0,0 +1,7 @@
+export type ImeKeyboardEvent = Pick<KeyboardEvent, "isComposing" | "keyCode">;
+
+export function isImeCompositionEvent(event: ImeKeyboardEvent): boolean {
+  // Safari can clear `isComposing` on the keydown that finishes composition.
+  // `229` is retained as the compatibility signal that an IME is processing it.
+  return event.isComposing || event.keyCode === 229;
+}