Usernames, email, and password fields are currently `rtl` in `rtl` locales. However, these fields are primarily standardized to `ltr` character sets and for better experience and readability, should be presented left-to-right in all locales.
Fix username, email, and password fields throughout install and admin to be set to `ltr` text direction.
Props man4toman, sabernhardt, ierwira, agnieszkaszuba, SergeyBiryukov, joyously, hellofromTonya, shibleemehdi, oglekler, audrasjb, sajjad67, huzaifaalmesbah, joedolson.
Fixes#54915.
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