QGB relayer relay more than 2/3 signatures and less than all of them correctly

[rach-id]

Summary of Bug

Currently, in the QGB smart contract, we're checking whether the provided list of signatures has the same number of validators in the current valset:

https://github.com/celestiaorg/quantum-gravity-bridge/blob/37b613843c7a0681fe2a8ae82d3422e1f1cfb311/src/QuantumGravityBridge.sol#L272

However, the relayer currently only puts the signatures it finds if they're above the required threshold. Therefore, if the relayer found a majority of signatures, while the rest are missing, it will relay them and the contract will revert, while it shouldn't.
Thus, the implementation of the relayer should be updated to support this.

Version

79b83d8

Steps to Reproduce

• Run the e2e tests with 4 validators and 4 orchestrators.
• stop one of the orchestrators.

For Admin Use

• Not duplicate issue
• Appropriate labels applied
• Appropriate contributors tagged
• Contributor assigned/self-assigned