As discussed in #22847 the helpers in helpers.less need to have a
separate prefix as they are causing conflicts with fomantic styles
This will allow us to have the `.gt-hidden { display:none !important; }`
style that is needed to for the reverted PR.
Of note in doing this I have noticed that there was already a conflict
with at least one chroma style which this PR now avoids.
I've also added in the `gt-hidden` style that matches the tailwind one
and switched the code that needed it to use that.
Signed-off-by: Andrew Thornton <art27@cantab.net>
---------
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
