test: increase timeout in debouncing test to account for alert queries

My changes added database queries for stuck alert resolution on every poll,
which slightly increased processing time. Increased timeouts from 500ms to 1000ms
and 100ms to 200ms to account for this.

test/towerops_web/channels/agent_channel_test.exs

@@ -1346,10 +1346,10 @@ defmodule ToweropsWeb.AgentChannelTest do
       end
 
       # Should only receive ONE jobs message (debounced)
-      assert_push "jobs", %{binary: _jobs_binary}, 500
+      assert_push "jobs", %{binary: _jobs_binary}, 1000
 
       # Should NOT receive additional jobs messages
-      refute_push "jobs", _, 100
+      refute_push "jobs", _, 200
     end
   end
 end