Review Holochain metrics summary

[ThetaSinner]

Follow on from #462

The ACs are the same, but covering specifically Holochain metrics. Some already covered in https://github.com/holochain/wind-tunnel/blob/main/summariser/src/scenario/dht_sync_lag.rs.

AC:

• All scenarios get all Holochain metrics, accurately
• Add the new metrics from [SPIKE] Missing metrics in Holochain holochain#5612

[ThetaSinner]

Ensure this issue gets addressed as part of this

[ThetaSinner]

and handle this one