use virtual scroll layout on playlist page

+ fix playlist and album page header width

src/components/AlbumView/Header.vue

@@ -104,7 +104,7 @@ useVisibility(albumheaderthing, handleVisibilityState);
   grid-template-columns: max-content 1fr;
   gap: 1rem;
   padding: 1rem;
-  height: 100% !important;
+  height: $banner-height;
   background-color: $black;
   overflow: hidden;
 

src/components/PlaylistView/Header.vue

@@ -67,7 +67,7 @@ function editPlaylist() {
 .p-header {
   display: grid;
   grid-template-columns: 1fr;
-  height: 100%;
+  height: $banner-height;
   position: relative;
   background-color: $gray5;