use higher of available engine and builder API bids

[tersec]

No description provided.

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Unit Test Results

         9 files  ±0    1 074 suites  ±0   31m 46s ⏱️ +8s
  3 675 tests ±0    3 396 ✔️ ±0  279 💤 ±0  0 ❌ ±0 
15 668 runs  ±0  15 363 ✔️ ±0  305 💤 ±0  0 ❌ ±0 

Results for commit 8510d42. ± Comparison against base commit ed148ab.

♻️ This comment has been updated with latest results.

[zah]

IIRC, Lighthouse has a special configuration parameter allowing the user to specify preference for local blocks by requiring the blinded block value to exceed the local block value by a specific amount before it's being selected. Something like this can be implemented in a follow-up PR.

[tersec]

IIRC, Lighthouse has a special configuration parameter allowing the user to specify preference for local blocks by requiring the blinded block value to exceed the local block value by a specific amount before it's being selected. Something like this can be implemented in a follow-up PR.

Yes, we have an issue #4084 on that and I deliberately kept that out of this PR, to avoid bikeshedding delay/risk. It's a good idea, and now trivial to implement: if using a builder API relay would only net negligible increased profit, but might fail and lose the entire block/payload, when one already has a perfectly good engine API block/payload, then, it's not a good idea to use the builder block and risk proposal failure.