fix: allow relaying based on first block

[danwt]

Old behavior:

The chain processor will only send block info to the path processor if the block is a 'new' block. It has the assumption that new blocks come frequently, so it does not consider the first block (highest at start time) a new block.

New behavior:

The chain processor will only send block info to the path processor if the block is a 'new' block. The first block is considered a new block.

Extra:

• improves error visibility in processing messages
• adds more debug logs
• removes old patch (https://github.com/dymensionxyz/go-relayer/commit/8b8e5821fdb53b68457aee24c2af67f86ade18a2)

[danwt]

I just pushed a simplification and I think I regressed it, gonna fix