Fixed terminology for `deferred transactions`, optimize to use one loop for all transactions now

[acoutts]

• I learned the correct term for these newly included transactions are actually deferred transactions and not inline transactions, so I updated the code comments accordingly
• Changed the loop routine in on_accepted_block to access the transaction IDs for normal transactions from within the packed transaction, so now all transactions are processed in one loop using the data in block_state->block->transactions
• Cleaned up previous implementation with the newly simplified routine