fix: fix validator update logic

[keefel]

Description

When the relayer address or bls key changed, the tendermint can't sync this change, so this PR is aimed to fix this issue, update the cross-chain related fields when updating the validator set.

Rationale

Fix validator update logic of cross-chain part.

Example

NA

Changes

Notable changes:

• Update validator set when cross-chain related fields changed.

[forcodedancing]

For Edit validator relayer address/blskey, do we need to include it in this pr?

[unclezoro]

For Edit validator relayer address/blskey, do we need to include it in this pr?

It is ok to add it in next PR.