chore: improve context button accessibility (#21876)

Make context menu button filled on album list and faces page

web/src/lib/components/album-page/album-card.svelte

@@ -48,7 +48,7 @@
         aria-label={$t('show_album_options')}
         icon={mdiDotsVertical}
         shape="round"
-        variant="ghost"
+        variant="filled"
         size="medium"
         class="icon-white-drop-shadow"
         onclick={showAlbumContextMenu}

web/src/lib/components/faces-page/people-card.svelte

@@ -64,9 +64,10 @@
   {#if showVerticalDots}
     <div class="absolute top-2 end-2 z-1">
       <ButtonContextMenu
-        buttonClass="icon-white-drop-shadow focus:opacity-100 {showVerticalDots ? 'opacity-100' : 'opacity-0'}"
-        color="primary"
+        buttonClass="icon-white-drop-shadow"
+        color="secondary"
         size="medium"
+        variant="filled"
         icon={mdiDotsVertical}
         title={$t('show_person_options')}
       >