Fix non module gRPC gateway queries

[julienrbrt]

After registering the cmtservice gRPC gateway routes, we get the following

GET http://localhost:1317/cosmos/base/tendermint/v1beta1/blocks/latest

{
  "code": 2,
  "message": "error in json rpc client, with http response metadata: (Status: 200 OK, Protocol HTTP/1.1). RPC error -32603 - Internal error: no query handler found for /cosmos.base.tendermint.v1beta1.Service/GetLatestBlock",
  "details": [
    
  ]
}

related: #22715 (comment)

We need to verify all those APIs works: https://github.com/ping-pub/explorer/blob/master/src/libs/api/index.ts in order to not break integratooors.

[julienrbrt]

Completed in #22803