Fix dropdown text ellipsis (#30628)

Follow
https://github.com/go-gitea/gitea/pull/30547#discussion_r1573866519

Fix #30624

The Fomantic UI Dropdown wasn't designed to work that way, its "text"
element might contain images. So the "overflow" shouldn't be added to
any general dropdown text.


![image](https://github.com/go-gitea/gitea/assets/2114189/f6ceaabd-bc89-4bf2-baa2-a6f0324c1962)

web_src/css/base.css

@@ -391,12 +391,6 @@ a.label,
   color: var(--color-text-light-2);
 }
 
-.ui.dropdown > .text {
-  white-space: nowrap;
-  overflow: hidden;
-  text-overflow: ellipsis;
-}
-
 /* extend fomantic style '.ui.dropdown > .text > img' to include svg.img */
 .ui.dropdown > .text > .img {
   margin-left: 0;