feat: return an error if a transaction exceeds the block's gas or size limit during mempool insertion

[beer-1]

Is your feature request related to a problem? Please describe.
When a transaction is inserted into the mempool, there are cases where it silently disappears due to its size or gas consumption. In the block SDK, during proposal preparation and processing, transactions that exceed the block limit are automatically removed.

Describe the solution you'd like
We can customize the mempool to reject a transaction at insertion if it exceeds the block limit.