fix(select): prevent hover state from changing active item background color

- Exclude .is-active from hover selector
- Add explicit :hover rule for .is-active to maintain selected color

web/src/index.css

@@ -425,7 +425,7 @@ pre,
   margin-top: 0;
 }
 
-.ui-select-item:hover:not(:disabled) {
+.ui-select-item:hover:not(:disabled):not(.is-active) {
   background: var(--bg-hover);
 }
 
@@ -435,6 +435,10 @@ pre,
   font-weight: 500;
 }
 
+.ui-select-item.is-active:hover {
+  background: var(--bg-selected);
+}
+
 .ui-select-item:disabled {
   color: var(--text-muted);
   cursor: not-allowed;