Fix WebUI error in development mode (#19078)
Fix WebUI error in development mode (#19078)

Caused by using JSX features without importing React
im-in-space/mastodon,theoria24/mastodon,Ryanaka/mastodon,im-in-space/mastodon,theoria24/mastodon,gol-cha/mastodon,im-in-space/mastodon,maa123/mastodon,MitarashiDango/mastodon,musashino205/mastodon,glitch-soc/mastodon,masto-donte-com-br/mastodon,im-in-space/mastodon,masto-donte-com-br/mastodon,musashino205/mastodon,musashino205/mastodon,yukimochi/mastodon,Ryanaka/mastodon,maa123/mastodon,glitch-soc/mastodon,musashino205/mastodon,theoria24/mastodon,yukimochi/mastodon,maa123/mastodon,MitarashiDango/mastodon,masto-donte-com-br/mastodon,glitch-soc/mastodon,MitarashiDango/mastodon,theoria24/mastodon,Ryanaka/mastodon,glitch-soc/mastodon,gol-cha/mastodon,Ryanaka/mastodon,maa123/mastodon,gol-cha/mastodon,masto-donte-com-br/mastodon,MitarashiDango/mastodon,yukimochi/mastodon,yukimochi/mastodon,gol-cha/mastodon