[bug] authz module `grants-by-grantee` query is broken

[clemensgg]

Bug description

The grants-by-grantee endpoint of the authz module on Terra is returning an incomplete list of authz grants for a given grantee:

https://terra-rest.publicnode.com/cosmos/authz/v1beta1/grants/grantee/terra1305e92ng6a9pdh3ttc3ld459ckxupxt33gqrc8

This becomes obvious when comparing the above response with a response of a designated granter-grantee pair:

https://terra-rest.publicnode.com/cosmos/authz/v1beta1/grants?granter=terra17gcjmzpz2sfjj9waa6f2e8pr7s70v3hchac2hu&grantee=terra1305e92ng6a9pdh3ttc3ld459ckxupxt33gqrc8

Note that the grant for granter terra17gcjmzpz2sfjj9waa6f2e8pr7s70v3hchac2hu is missing from the grants-by-grantee response for the given grantee terra1305e92ng6a9pdh3ttc3ld459ckxupxt33gqrc8

Unfortunately this breaks restake functionality for some users.

Expected behavior

The grants-by-grantee endpoint should return the complete list of authz grants for the given grantee

[alagiz]

hey man, it looks more like an endpoint issue, maybe they have custom implementation of their node or something, but other endpoints return correct results:

1. https://terra-api.cosmosrescue.dev:8443/cosmos/authz/v1beta1/grants/grantee/terra1305e92ng6a9pdh3ttc3ld459ckxupxt33gqrc8
2. https://terra2.tdrsys.com/cosmos/authz/v1beta1/grants/grantee/terra1305e92ng6a9pdh3ttc3ld459ckxupxt33gqrc8
3. https://terra-phoenix-api.highstakes.ch/cosmos/authz/v1beta1/grants/grantee/terra1305e92ng6a9pdh3ttc3ld459ckxupxt33gqrc8

publicnode endpoint even returns a different data structure compared to all those working ones ("key" in every grant item that looks like a pagination key and it doesn't really make sense to have it there), so something is off with this endpoint i'd say