message: refocus editor after clicking on autocompletes
diff: @@ -1313,7 +1313,8 @@ export default class MessageComposerInput extends React.Component {
  if (range) {
  const change = editorState.change()
  .collapseToAnchor()
  - .moveOffsetsTo(range.start, range.end);
  + .moveOffsetsTo(range.start, range.end)
  + .focus();
  editorState = change.value;
  }
  @@ -1321,12 +1322,14 @@ export default class MessageComposerInput extends React.Component {
  if (inline) {
  change = editorState.change()
  .insertInlineAtRange(editorState.selection, inline)
  - .insertText(suffix);
  + .insertText(suffix)
  + .focus();
  }
  else {
  change = editorState.change()
  .insertTextAtRange(editorState.selection, completion)
  - .insertText(suffix);
  + .insertText(suffix)
  + .focus();
  }
  editorState = change.value;
  