Add GIF and WebP support for custom emojis (#11519)
Add GIF and WebP support for custom emojis (#11519)

Fix #11466

imas/mastodon,kazh98/social.arnip.org,gol-cha/mastodon,tateisu/mastodon,tateisu/mastodon,d6rkaiz/mastodon,gol-cha/mastodon,d6rkaiz/mastodon,rainyday/mastodon,rainyday/mastodon,pinfort/mastodon,rainyday/mastodon,tateisu/mastodon,gol-cha/mastodon,d6rkaiz/mastodon,imas/mastodon,imas/mastodon,rainyday/mastodon,d6rkaiz/mastodon,gol-cha/mastodon,kazh98/social.arnip.org,kazh98/social.arnip.org,pinfort/mastodon,pinfort/mastodon,imas/mastodon,pinfort/mastodon,kazh98/social.arnip.org,tateisu/mastodon