refactor: utilize backdrop-glass shortcut to achieve frosted glass

src/contentScripts/views/App.vue

@@ -202,7 +202,7 @@ function setAppAppearance() {
             p-2 m-2 bg="$bew-content-1" flex="~ col gap-2 shrink-0"
             rounded="$bew-radius" border="1px $bew-fill-1"
             shadow="$bew-shadow-2"
-            style="backdrop-filter: var(--bew-filter-glass)"
+            backdrop-glass
           >
             <Tooltip :content="$t('dock.search')" :placement="tooltipPlacement">
               <button

src/contentScripts/views/Favorites/Favorites.vue

@@ -168,7 +168,7 @@ function scrollToTop(element: HTMLElement, duration: number) {
       bg="$bew-content-1"
       z="2"
       un-border="!rounded-t-$bew-radius"
-      style="backdrop-filter: var(--bew-filter-glass)"
+      backdrop-glass
     >
       <h3 cursor="pointer" font-600 @click="scrollToTop(favoriteVideosWrap, 300)">
         {{ activatedFavoriteTitle }}