Fix UI misalignment on user setting page (#25629)

Fix #25628

Diff with ignoring space:
https://github.com/go-gitea/gitea/pull/25629/files?diff=unified&w=1

The "modal" shouldn't appear between "ui attached segment", otherwise
these segments lose margin-top.

After the fix:

<details>


![image](ac15e73d-4ca8-416a-950d-ffc912c6ab61)


![image](eb431336-4d21-4e44-8beb-8919595a83c8)


![image](dffaed88-5ba2-419d-a241-24cb200f757c)


![image](e8c5a03e-e16a-4c94-a1a5-7845d4e1a824)

</details>

web_src/css/repo.css

@@ -2358,10 +2358,6 @@
   color: var(--color-text-light-2);
 }
 
-.settings .list.email > .item:not(:first-child) {
-  min-height: 60px;
-}
-
 .settings .list.collaborator > .item {
   padding: 0;
 }