Use the correct line-height for bold emoji
Use the correct line-height for bold emoji

This avoids marking messages detected as big emoji with `markdown-body` so that
they get the correct line-height.

Fixes https://github.com/vector-im/riot-web/issues/9808

matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk