Fix alignment of loading spinner in avatar menu

Adjusts position of loading spinner to be the same as the three dots
icon.
This also indirectly fixes the location where the menu will appear which
was shifted before this fix.

Signed-off-by: Vincent Petry <vincent@nextcloud.com>

src/components/Avatar/Avatar.vue

@@ -624,10 +624,9 @@ export default {
 			top: 0;
 			left: 0;
 		}
-		.icon-more {
+		.icon-more, .icon-loading {
 			display: flex;
 			cursor: pointer;
-			opacity: 0;
 			background: none;
 			font-size: 18px;
 			align-items: center;
@@ -638,6 +637,9 @@ export default {
 				display: block;
 			}
 		}
+		.icon-more {
+			opacity: 0;
+		}
 		&:focus,
 		&:hover {
 			.icon-more {