[builder] Builder UO reject should remove expected storage slots

[dancoombs]

Describe the bug
The bundle builder calls assemble_context where it:

1. Calculates the bundle gas limit - but only to limit the total size
2. Collects expected storage slots
3. Computes aggregated signatures

It then calls estimate_gas_rejecting_failed_ops, calculating an exact gas limit. If it rejects any UOs it also recalculates any associated aggregated signatures. However, it misses removing that rejected UOs storage slots. In both the fitler_reject and reject_index we should remove the expected storage slots of rejected entities (potentially look at some more code sharing/cleanup here).