fix: netsim should fail on all failed tests (#1816)

## Description

Just bringing this in line with the PR run config. We used to keep this
open due to an issue that took us time to resolve so we unblocked the
rest of the pipe. Now the issue crept through again for the same reason.

## Notes & open questions

<!-- Any notes, remarks or open questions you have to make about the PR.
-->

## Change checklist

- [ ] Self-review.
- [ ] Documentation updates if relevant.
- [ ] Tests if relevant.

.github/workflows/netsim.yml

@@ -122,8 +122,8 @@ jobs:
         c='${{ steps.detect_comment_config.outputs.NETSIM_CONFIG }}'
         if [ -z "${c}" ];
         then
-          sudo python3 main.py sims/iroh
-          sudo python3 main.py sims/integration
+          sudo python3 main.py --integration sims/iroh
+          sudo python3 main.py --integration sims/integration
         else
           echo $c >> custom_sim.json
           sudo python3 main.py custom_sim.json