Clarify that Gitea requires JavaScript (#23677)

Close #20553

There were already a lot of functions powered by JavaScript in Gitea.

Without JavaScript, the Gitea Web UI almost doesn't work (only some
static links work ....)

Author: wxiaoguang

options/locale/locale_en-US.ini

@@ -19,7 +19,7 @@ active_stopwatch = Active Time Tracker
 create_new = Create…
 user_profile_and_more = Profile and Settings…
 signed_in_as = Signed in as
-enable_javascript = This website works better with JavaScript.
+enable_javascript = This website requires JavaScript.
 toc = Table of Contents
 licenses = Licenses
 return_to_gitea = Return to Gitea