Fix border on focus in dashboard repo search (#29893)

Before:

<img width="449" alt="Screenshot 2024-03-18 at 22 35 10"
src="https://github.com/go-gitea/gitea/assets/115237/f2893870-e7a3-4e34-b0cf-4610735c9b36">

After:

<img width="453" alt="image"
src="https://github.com/go-gitea/gitea/assets/115237/36a9f800-28a4-40fc-b6d2-a2e717ddba01">

Author: silverwind

web_src/css/base.css

@@ -283,7 +283,9 @@ ol.ui.list li,
 .ui.action.input:not([class*="left action"]) > input:focus + .ui.dropdown.selection,
 .ui.action.input:not([class*="left action"]) > input:focus + .ui.dropdown.selection:hover,
 .ui.action.input:not([class*="left action"]) > input:focus + .button,
-.ui.action.input:not([class*="left action"]) > input:focus + .button:hover {
+.ui.action.input:not([class*="left action"]) > input:focus + .button:hover,
+.ui.action.input:not([class*="left action"]) > input:focus + .icon + .button,
+.ui.action.input:not([class*="left action"]) > input:focus + .icon + .button:hover {
   border-left-color: var(--color-primary);
 }
 .ui.action.input:not([class*="left action"]) > input:focus {
@@ -1956,6 +1958,10 @@ table th[data-sortt-desc] .svg {
   justify-content: center;
 }
 
+.ui.icon.input > i.icon {
+  transition: none;
+}
+
 .flex-items-block > .item,
 .flex-text-block {
   display: flex;