Prevent premature submission on IME input (#16673)

* fix: Prevent premature submission on IME input

* chore: update webui static build

* refactor: Put IME completion checker in a helper function and add checking for `KeyboardEvent.eventKey === 229`

* chore: update webui static build

* chore: update webui static build

* chore: update webui static build

tools/server/webui/src/lib/utils/is-ime-composing.ts

@@ -0,0 +1,5 @@
+export function isIMEComposing(event: KeyboardEvent) {
+	// Check for IME composition using isComposing property and keyCode 229 (specifically for IME composition on Safari, which is notorious for not supporting KeyboardEvent.isComposing)
+	// This prevents form submission when confirming IME word selection (e.g., Japanese/Chinese input)
+	return event.isComposing || event.keyCode === 229;
+}