fix: send message on Enter keypress only when not in input method mode (#63)

lib/hooks/use-enter-submit.tsx

@@ -9,7 +9,11 @@ export function useEnterSubmit(): {
   const handleKeyDown = (
     event: React.KeyboardEvent<HTMLTextAreaElement>
   ): void => {
-    if (event.key === 'Enter' && !event.shiftKey) {
+    if (
+      event.key === 'Enter' &&
+      !event.shiftKey &&
+      !event.nativeEvent.isComposing
+    ) {
       formRef.current?.requestSubmit()
       event.preventDefault()
     }