Set autocomplete attr for email field on signup page (#19833)
Set autocomplete attr for email field on signup page (#19833)

The email address will be used as the "username" for sign-in purposes, so it's the value that should be stored in password managers. We can inform the password manager of this by setting `autocomplete="email"`. Without this hint, password managers may instead store the `username` field, which isn't valid for sign-in (this happens with iCloud Keychain in Safari, for instance).
maa123/mastodon,gol-cha/mastodon,gol-cha/mastodon,theoria24/mastodon,maa123/mastodon,glitch-soc/mastodon,yukimochi/mastodon,glitch-soc/mastodon,theoria24/mastodon,Ryanaka/mastodon,im-in-space/mastodon,masto-donte-com-br/mastodon,gol-cha/mastodon,maa123/mastodon,MitarashiDango/mastodon,im-in-space/mastodon,masto-donte-com-br/mastodon,masto-donte-com-br/mastodon,gol-cha/mastodon,im-in-space/mastodon,Ryanaka/mastodon,masto-donte-com-br/mastodon,Ryanaka/mastodon,MitarashiDango/mastodon,maa123/mastodon,glitch-soc/mastodon,theoria24/mastodon,theoria24/mastodon,yukimochi/mastodon,MitarashiDango/mastodon,yukimochi/mastodon,Ryanaka/mastodon,im-in-space/mastodon,glitch-soc/mastodon,yukimochi/mastodon,MitarashiDango/mastodon