Fix display of artist images in universal search

lib/music_library_web/components/artist_components.ex

@@ -5,7 +5,7 @@ defmodule MusicLibraryWeb.ArtistComponents do
 
   attr :artist, :map, required: true
   attr :image_hash, :string, required: true
-  attr :class, :string, required: false
+  attr :class, :string, required: false, default: nil
   attr :width, :integer, default: nil
 
   def artist_image(assigns) do

lib/music_library_web/components/search_components.ex

@@ -78,7 +78,12 @@ defmodule MusicLibraryWeb.SearchComponents do
     >
       <div class="flex items-center space-x-3">
         <div class="flex-shrink-0">
-          <.artist_image artist={@artist} width={96} image_hash={@image_data_hash} />
+          <.artist_image
+            class="w-12 h-12 rounded-md aspect-square object-cover"
+            artist={@artist}
+            width={96}
+            image_hash={@image_data_hash}
+          />
         </div>
         <div class="min-w-0 flex-1">
           <p class="text-sm font-medium text-zinc-900 dark:text-zinc-100 truncate">