Revert signup validation changes

[cesswairimu]

Fixes #8461

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[gitpod-io]

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (main@bb75633). Click here to learn what that means.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #8466   +/-   ##
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  Coverage        ?   81.89%           
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  Files           ?      101           
  Lines           ?     5899           
  Branches        ?        0           
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  Hits            ?     4831           
  Misses          ?     1068           
  Partials        ?        0           

[cesswairimu]

Separating these two #8465 is discarding changes from these two files when I resolve the conflicts.