Remove ExecV3: Extend BAL test with varied transaction types

[mh0lt]

Sub-task of #19318

Phase 1d: BAL test extension

File: execution/engineapi/engine_api_bal_test.go

Extend TestEngineApiGeneratedPayloadIncludesBlockAccessList with additional transaction types to ensure the refactoring doesn't break BAL tracking:

• Contract creation (code changes tracked in BAL)
• Storage writes via contract calls (storage changes tracked)
• Multiple transaction types in same block

The existing test only covers a simple transfer. Varying the transaction types ensures all BAL tracking paths (balance, nonce, code, storage) produce correct results after the refactoring.

[VBulikov]

yperbasis added Imp2 as Importance

[jeanpablojp]

I verified against current main (dd99b07): the three extensions this issue asks for were added by #19707, five days after the issue was filed. So this can be closed.