refactor(lee): migrate program self/caller identity from ProgramId to AccountId

ProgramInput/ProgramOutput.self_program_id/caller_program_id, and the
dispatcher's CallerData.program_id, now carry AccountId (renamed to
self_account_id/caller_account_id) instead of ProgramId. These fields
are self-reported/cross-checked dispatch bookkeeping, not RISC0 image
identity, and AccountId already crosses the guest/host boundary this
way via every pre_state.account_id.

ProgramId is now confined to what's actually image-id-keyed:
env::verify, Program.id (from compute_image_id()), and the
for_public_pda/for_private_pda derivation formulas, each recovering
the real ProgramId from AccountId via the existing bijection exactly
where needed.

Rebuilds artifacts and the prebuilt sequencer db fixture to match.

lee/state_machine/src/validated_state_diff/mod.rs

@@ -124,7 +124,6 @@ impl ValidatedStateDiff {
                 chained_call.pre_states,
                 chained_call.instruction_data
             );
-
             let mut program_output = if chained_call.program_account_id
                 == RESERVED_DEPLOYMENT_PROGRAM_ACCOUNT_ID
             {