chore(network-subgraphs): Exact startBlock values for Polygon (#1011)

Update startBlock values to have values corresponding the contract
creation block. Obviously there can't exist any contract events before
those blocks.

## Other changes

- Renames `subgraph_matic.yaml` to `subgraph_polygon.yaml` to match the
current name of the chain
- removed some obsolete comments

Author: teogeb

packages/network-subgraphs/subgraph_matic.yaml renamed to packages/network-subgraphs/subgraph_polygon.yaml

@@ -15,7 +15,7 @@ dataSources:
     source:
       address: "0x0D483E10612F327FC11965Fc82E90dC19b141641"
       abi: StreamRegistry
-      startBlock: 23586970
+      startBlock: 23586971
     mapping:
       kind: ethereum/events
       apiVersion: 0.0.6
@@ -44,7 +44,7 @@ dataSources:
     source:
       address: "0x080F34fec2bc33928999Ea9e39ADc798bEF3E0d6"
       abi: NodeRegistry
-      startBlock: 23562860
+      startBlock: 23562861
     mapping:
       kind: ethereum/events
       apiVersion: 0.0.6
@@ -66,7 +66,7 @@ dataSources:
     source:
       address: "0xe8e2660CeDf2a59C917a5ED05B72df4146b58399"
       abi: StreamStorageRegistry
-      startBlock: 23586997
+      startBlock: 23586998
     mapping:
       kind: ethereum/events
       apiVersion: 0.0.6
@@ -88,7 +88,7 @@ dataSources:
     source:
       address: "0x496a6154da5aA6a021a3bd0DCd337DA80F48a6e1"
       abi: ProjectRegistryV1
-      startBlock: 38700927
+      startBlock: 38700928
     mapping:
       kind: ethereum/events
       apiVersion: 0.0.6
@@ -123,7 +123,7 @@ dataSources:
     source:
       address: "0xdF8b74D735197dCD5C94bE933db080E69A958de6"
       abi: MarketplaceV4
-      startBlock: 39591312
+      startBlock: 39591313
     mapping:
       kind: ethereum/events
       apiVersion: 0.0.6
@@ -144,7 +144,7 @@ dataSources:
     source:
       address: "0xAA7a4BdBE91F143F3103206e48A8AfF21101B6DE"
       abi: ProjectStakingV1
-      startBlock: 38701363
+      startBlock: 38701364
     mapping:
       kind: ethereum/events
       apiVersion: 0.0.6
@@ -170,7 +170,7 @@ dataSources:
     source:
       address: '0x869e88dB146ECAF20dDf199a12684cD80c263c8f'
       abi: StreamrConfig
-      startBlock: 50000000
+      startBlock: 50045923
     mapping:
       kind: ethereum/events
       apiVersion: 0.0.6
@@ -188,10 +188,9 @@ dataSources:
     name: SponsorshipFactory
     network: matic
     source:
-      # make sure this is same as config.contracts.SponsorshipFactory in https://github.com/streamr-dev/network-contracts/blob/develop/packages/config/src/networks.json
       address: '0x820b2f9a15ed45F9802c59d0CC77C22C81755e45'
       abi: SponsorshipFactory
-      startBlock: 50000000
+      startBlock: 50046404
     mapping:
       kind: ethereum/events
       apiVersion: 0.0.6
@@ -213,10 +212,9 @@ dataSources:
     name: OperatorFactory
     network: matic
     source:
-      # make sure this is same as config.contracts.OperatorFactory in https://github.com/streamr-dev/network-contracts/blob/develop/packages/config/src/networks.json
       address: '0x935734e66729b69260543Cf6e5EfeB42AC962183'
       abi: OperatorFactory
-      startBlock: 50000000
+      startBlock: 50046356
     mapping:
       kind: ethereum/events
       apiVersion: 0.0.6