Make describe-face also output the version information

* lisp/help-fns.el (describe-variable-custom-version-info): Allow
taking a type as an optional input, so this can be used for faces,
too (bug#30527).

* lisp/faces.el (describe-face): Use this to output the version
information.
Status Job ID Name Coverage
  Test
failed #2560
test-all

 
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