feat(chat): updates made on Jan-2025

Some updates were made to the course and described in this post:

* https://arrowsmithlabs.com/blog/learn-phoenix-liveview-update-guide-january-2025

lib/slax_web/live/chat_room_live/index.ex

@@ -16,12 +16,15 @@ defmodule SlaxWeb.ChatRoomLive.Index do
             :for={{id, {room, joined?}} <- @streams.rooms}
             class="cursor-pointer p-4 flex justify-between items-center group first:rounded-t last:rounded-b"
             id={id}
-            phx-click={JS.navigate(~p"/rooms/#{room}")}
+            phx-click={open_room(room)}
+            phx-keydown={open_room(room)}
+            phx-key="Enter"
+            tabindex="0"
           >
             <div>
               <div class="font-medium mb-1">
                 #{room.name}
-                <span class="mx-1 text-gray-500 font-light text-sm opacity-0 group-hover:opacity-100">
+                <span class="mx-1 text-gray-500 font-light text-sm hidden group-hover:inline group-focus:inline">
                   View room
                 </span>
               </div>
@@ -77,4 +80,8 @@ defmodule SlaxWeb.ChatRoomLive.Index do
 
     {:noreply, stream_insert(socket, :rooms, {room, joined?})}
   end
+
+  defp open_room(room) do
+    JS.navigate(~p"/rooms/#{room}")
+  end
 end