fix: ensure DA transaction throttling uses params that are set

[danyalprout]

📝 Summary

Migrated from flashbots/rbuilder PR flashbots/rbuilder#616

• Ensure the builders share the same OpDAConfig that the RPC endpoint does.
• For Flashblocks builder, consider the DA param values

💡 Motivation and Context

Prior to this PR, I believe setting throttling via the RPC would not have any impact as an unrelated DAConfig object is created here. Part of the work to fix: flashbots/rbuilder#613

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✅ I have completed the following steps:

• Run make lint
• Run make test
• Added tests (if applicable)

[SozinM]

I thought that DAConfig is already contained in the base config
Will double check this

[SozinM]

some small comments

[SozinM]

Seems like i forgot to save 1 comment
Let's add this field to OpRbuilderConfig directly so we won't have extra staff in here

[danyalprout]

I maybe misunderstanding, but I'm not sure we should do that. My understanding (please correct me if I'm wrong) is:

1. OpRbuilderConfig is only used for integration testing (ref) (and is used to setup the builder binary)
2. We probably don't want to configure this parameter right now, as it's required in every case?

[SozinM]

Yes, you are correct!
I meant to say that we should use structure OpRbuilderArgs
We could add DAConfig field to it, and set it to default (unless configured).
As i see default DAConfig won't have any effect (because it's fields are zeroes)
Then in main

                .with_components(op_node.components().payload(CustomOpPayloadBuilder::new(
                    builder_args.builder_signer,
                    std::time::Duration::from_secs(builder_args.extra_block_deadline_secs),
                    builder_args.enable_revert_protection,
                    builder_args.flashblocks_ws_url,
                    builder_args.chain_block_time,
                    builder_args.flashblock_block_time,
                )))

We will pass daconfig from OpRbuilderArgs too, like this

                .with_components(op_node.components().payload(CustomOpPayloadBuilder::new(
                    builder_args.builder_signer,
                    std::time::Duration::from_secs(builder_args.extra_block_deadline_secs),
                    builder_args.enable_revert_protection,
                    builder_args.flashblocks_ws_url,
                    builder_args.chain_block_time,
                    builder_args.flashblock_block_time,
                    builder_args.da_config,
                )))