fix: conditionally render job user handle in bounties_live component

- Updated the BountiesLive component to only display the job section if the user handle is present.

Author: zcesur

lib/algora_web/live/bounties_live.ex

@@ -758,7 +758,7 @@ defmodule AlgoraWeb.BountiesLive do
     assigns = assign(assigns, :job, assigns.event.item)
 
     ~H"""
-    <div>
+    <div :if={@job.user.handle}>
       <div class="relative -ml-[2.75rem]">
         <span
           :if={!@last?}