feat: Sanitize block gaps in eth_simulateV1

[iTranscend]

This PR:

• fills up block gaps with empty Calls execution in eth_simulateV1
• ensures the block number doesn't decrease during simulation

resolves https://github.com/paradigmxyz/reth/issues/15460

[jenpaff]

@iTranscend do you have capacity to get this over the finish line?

[iTranscend]

Hey @jenpaff. Yeah, I can get this finished in the next day or two. I'll just need to write a simpler version of my proposed solution.

The current solution is the most efficient way of solving this that I could think of by taking advantage of Iterators laziness, but I understand that it may be a bit hard to read.

[iTranscend]

Hey @mattsse, I've done away with the iterator approach and used a while loop to fill up the gaps

[iTranscend]

Hey @mattsse, got a chance to take a look at this?

[iTranscend]

Hey @mattsse

I took the stack based approached as suggested, but reversed block_state_calls so that I could emulate popping from the front.

This mimics the behavior of a VecDeque without incurring the cost of an extra allocation.

The reversal is O(n/2) as compared to the VecDeque approach which would have been O(n) plus an extra allocation.

This also guarantees that the Vec only ever shrinks by reusing an existing slot.