message: prevent match of ":-" prefixed string in emoji completion
diff: @@ -31,7 +31,7 @@ export function setupEmojiAutocompletion() {
  const valAtCursor = valueAtCursor(composer).value;
  const colonMatches = valAtCursor.match(emojiColonRegex);
  - if (!colonMatches) {
  + if (!colonMatches || valAtCursor.startsWith(':-')) {
  unmountEmojiDropodownNearInput(composer);
  return;
  }
  