mergify: also remove needs: work if CI ready

There are two cases here: either PR was in  review or needs work. in any case, new
CI should be started as pr-head is yellow. Once it completes, based on reviews, we can move
to ready for merge or back to needs work if fails.

.mergify.yml

@@ -97,6 +97,7 @@ pull_request_rules:
           - "needs: CI"
         remove: 
           - "needs: review"
+          - "needs: work"
 
   # From needs: work to needs: CI
   - name: "label needs: CI it was approved and pr-head needs to be rerun again"