consensus-specs v1.7.0-alpha.12 compatibility (deferring 7688)

[rolfyone]

not devnet6 compatible.

TODO:

• bump ref tests to alpha.12
• update Gloas config values
• Use MAX_REQUEST_PAYLOADS in EnvelopesByRange ethereum/consensus-specs#5383
• fix generic ssz tests
• disable gloas ref-tests waiting for full 7688 support
• Replace get_dependent_root with get_shuffling_dependent_root ethereum/consensus-specs#5374
• Set slot before using it for object construction ethereum/consensus-specs#5386 (not sure)
• Only reset builder withdrawal epoch if its balance has been swept ethereum/consensus-specs#5384 (not sure, validator.md side to be checked)
• Ignore instead of reject on preferences ethereum/consensus-specs#5429 fixed here update validation result for fee recipient mismatch to ignore instead of reject #10953
• Restrict builder deposits to payload builders ethereum/consensus-specs#5439

Documentation

• I thought about documentation and added the doc-change-required label to this PR if updates are required.

Changelog

• I thought about adding a changelog entry, and added one if I deemed necessary.

---

Note

Medium Risk
Touches fork-choice proposer boost, Gloas builder deposit/withdrawal rules, and withdrawal prefix semantics—consensus-sensitive but mostly spec conformance with Gloas ref tests gated off.

Overview
Brings Teku in line with consensus-specs v1.7.0-alpha.12 while deferring full Gloas/EIP-7688 (Gloas reference tests are disabled until progressive SSZ lands).

Gloas parameters and constants are updated in mainnet/minimal/swift YAML, REST fixtures, and presets: MIN_BUILDER_WITHDRAWABILITY_DELAY 64 epochs, PAYLOAD_DUE_BPS 5000, MAX_BUILDER_DEPOSIT_REQUESTS_PER_PAYLOAD 64, and builder withdrawal prefix 0xB0.

Builder deposit processing now skips non-builder credentials, registers new builders with PAYLOAD_BUILDER_VERSION, and only resets withdrawable_epoch for exited builders whose balance was swept; unit tests cover those cases.

Fork choice / proposer boost renames dependent-root helpers to get_shuffling_dependent_root and passes the current epoch explicitly (specrefs and ProposerPreferencesPublisher comments updated).

Networking caps execution payload envelope range requests with getMaxRequestPayloads() instead of the Deneb block limit.

Reference tests bump to alpha.12; generic SSZ executors use SszListSchema.createProgressive, container checks compare hash tree roots from YAML, and test struct schemas switch to uint8/uint32 where the new vectors require it.

specrefs track alpha.12 (containers, functions, configs, partial Fulu gossip API tweaks) and mark not-yet-implemented Gloas progressive SSZ items.

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[tbenr]

LGTM