DEV: Made test deterministic and re-enabled

Follow-up to 6b0cc9e2

spec/models/post_action_spec.rb

@@ -695,7 +695,7 @@ describe PostAction do
       end
 
       it "will automatically pause a topic due to large community flagging" do
-        skip "heisentest"
+        freeze_time
 
         # reaching `num_flaggers_to_close_topic` isn't enough
         [flagger1, flagger2].each do |flagger|