[Bug]: Integration of consumer versions v5.x with provider version v6.2.x is broken

[bermuell]

What happened?

Genesis information exported from provider v6.x is not supported by older consumer versions e.g. v5.x
Starting a consumer chain with ccvconsumer content generated by provider v6.2.x fails:

panic: unknown field "consumer_id" in types.ConsumerParams

goroutine 1 [running]:
github.com/cosmos/cosmos-sdk/codec.(*ProtoCodec).MustUnmarshalJSON(0x0?, {0xc000d3d000?, 0x0?, 0x0?}, {0x38b7a68?, 0xc000b0d1e0?})
        /go/pkg/mod/github.com/cosmos/[email protected]/codec/proto_codec.go:219 +0x3b
github.com/cosmos/interchain-security/v5/x/ccv/consumer.AppModule.InitGenesis({{}, {{0xc000d7a5a0, 0x2f}, {0x38b0ab8, 0xc001cb8230}, {0x0, 0x0}, {0x38f4860, 0xc000e077e0}, {0x38b7b58, ...}, ...}, ...}, ...)
        /interchain-security/x/ccv/consumer/module.go:139 +0x94

Interchain Security Version

v6.2.0

How to reproduce?

Start consumer version 5.2.0 with genesis file extended with ccvconsumer information exported from provider version v6.2.0
ccvconsumer.params contains

   "params": {
        "enabled": true,
        "blocks_per_distribution_transmission": "1000",
        "distribution_transmission_channel": "",
        "provider_fee_pool_addr_str": "",
        "ccv_timeout_period": "2419200s",
        "transfer_timeout_period": "3600s",
        "consumer_redistribution_fraction": "0.75",
        "historical_entries": "10000",
        "unbonding_period": "1209600s",
        "soft_opt_out_threshold": "0",
        "reward_denoms": [],
        "provider_reward_denoms": [],
        "retry_delay_period": "3600s",
        "consumer_id": "0"
      },