Revert "perf: use overflow: clip instead of hidden" (#7273)

This reverts commit 06e817af59.

src/client/components/sidebar.vue

@@ -390,8 +390,7 @@ export default defineComponent({
 				font-size: $ui-font-size;
 				line-height: 3rem;
 				text-overflow: ellipsis;
-				overflow: hidden; // overflow: clip; をSafariが対応したら消す
-				overflow: clip;
+				overflow: hidden;
 				white-space: nowrap;
 				width: 100%;
 				text-align: left;