Update virtual map / MerkleDb grafana dashboards after switch to virtual mega map

Mod-services code will introduce a number of new virtual maps to the state. Instead of the existing 5 VMs (accountsStore, filesStore, tokenRelStore, smartContractIterableKvStore, and uniqueTokensStore) there will be a dozen or so VMs with different labels.

Most grafana dashboards use the store selected as the dashboard parameter. The parameter is not hard-coded, it's populated from real metrics. However, a few panels reference particular VMs, and they will be broken (empty) in 0.48 This ticket is to identify those panels and update them according to 0.48 virtual map labels.

Start by locating the Grafana dashboards and panels that reference accountsStore, filesStore, tokenRelStore, smartContractIterableKvStore, or uniqueTokensStore. Compare those references with the 0.48 virtual map labels and update affected panels so they populate correctly after the virtual mega map switch.

Written by the indexing model from the issue text.