PSS: Bug when querying has-to-validate

[p-offtermatt]

Problem

For chains with top-N = 0, the has-to-validate method always includes all validators.

Closing criteria

The has-to-validate method should be fixed to only return validators that have to actually validate.

Problem details

The problem is here:

interchain-security/x/ccv/provider/keeper/grpc_query.go

Line 281 in 9270767

if topN, found := k.GetTopN(ctx, chainID); found && topN > 0 {

If the chain is not a top N chain, the if is never entered, thus all validators are put into the consumersToValidate list.