Fix event processing and entities query for filecoin watchers

[prathamesh0]

Part of https://www.notion.so/Diagnose-sushiswap-v3-watcher-entities-mismatches-1c6b170dc4274d3cbcb75f302724032a

• Filter out pruned subgraph entities when fetching from db using group by queries
• Sort events from Filecoin (FEVM) endpoint by tx and log index