message: fix completion bug
diff: @@ -82,6 +82,12 @@ export function setupEmojiAutocompletion() {
  }
  const composer = target as HTMLTextAreaElement;
  + const valAtCursor = valueAtCursor(composer).value;
  + const colonMatches = valAtCursor.match(emojiColonRegex);
  +
  + if (!colonMatches) {
  + return;
  + }
  const allowedKeys: string[] = [Key.ArrowDown, Key.ArrowUp, Key.Tab, Key.Enter, Key.Escape];
  const eventKey = ev.key;
  