Rejected transaction with successful preview

[slundqui]

There seems to be an issue with openLong on steth pools where a preview is successful, but the transaction itself is rejected with status == 0. To reproduce, run python scripts/local_fuzz_bots.py --steth --rng-seed 2405590. On this seed, here is the series of events that happened:

• On block 36, we preview a call for openLong. The preview is successful and returns a bondProceeds amount.
• We submit the transaction on block 36. The transaction gets rejected with status == 0. The submitted transaction advances the block to block 37.
• We try previewing the call again on block 37, and the preview is rejected with InsufficientLiquidity.

We expect the preview on block 36 to fail.

Note that while this was tested with an explicit seed, this issue persists in fuzz testing regardless of seed.

[slundqui]

Solved, the issue is that the preview on block 36 should be a preview to the pending block, as the preview technically is lagging behind a block.