Email icon missing from core

Since https://gitlab.fusiondirectory.org/fusiondirectory/fd/issues/5840 fix, the recovery page Selenium test is almost always failing with a CSRF error.

It is quite hard to reproduce as it only happens on first try, and seems tightly related to the workflow used.

We should try to fix this one as some other CSRF protection related crash have been encountered and they may be related.

I should also note that any session problem, or manual URL tinkering may result in this kind of CSRF protection error.