Require at least one unit to be enabled (#24189)

Don't remember why the previous decision that `Code` and `Release` are
non-disable units globally. Since now every unit include `Code` could be
disabled, maybe we should have a new rule that the repo should have at
least one unit. So any unit could be disabled.

Fixes #20960
Fixes #7525

---------

Co-authored-by: delvh <dev.lh@web.de>
Co-authored-by: yp05327 <576951401@qq.com>

templates/user/profile.tmpl

@@ -135,7 +135,7 @@
 						{{svg "octicon-package"}} {{.locale.Tr "packages.title"}}
 					</a>
 					{{end}}
-					{{if .IsRepoIndexerEnabled}}
+					{{if and (not $.UnitTypeCode.UnitGlobalDisabled) .IsRepoIndexerEnabled}}
 					<a class='{{if eq .TabName "code"}}active {{end}}item' href="{{.ContextUser.HomeLink}}/-/code">
 						{{svg "octicon-code"}} {{.locale.Tr "user.code"}}
 					</a>