Specrefs alpha8

[zilm13]

PR Description

I will toggle payload_due specrefs in #10749 after this

Fixed Issue(s)

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.

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Note

Low Risk
Documentation and spec-tracking metadata only; runtime behavior is unchanged unless separate Java work lands elsewhere.

Overview
Bumps ethspecify tracking to v1.7.0-alpha.8 by refreshing specrefs/.ethspecify.yml and specrefs/functions.yml.

Exception list cleanup: Removes many temporary “ignored until alpha.8” entries (gossip validators, prepare_execution_payload, fork-choice helpers, Electra weak subjectivity, etc.). Only get_payload_due_ms#gloas stays under “Will be fixed later”; get_proposer_dependent_root#gloas is reclassified as not implemented.

Spec ↔ code linkage: For previously unmapped or excepted functions, adds sources entries pointing at existing Teku classes (e.g. WeakSubjectivityCalculatorElectra / WeakSubjectivityCalculatorGloas, ForkChoiceModelGloas, gossip validators, BlockProcessorGloas.applyParentExecutionPayload). Documents Electra weak-subjectivity spec text as a diff from phase0 and adds a full Gloas compute_weak_subjectivity_period spec block. Updates embedded prepare_execution_payload spec snippets (e.g. parent_beacon_block_root on Bellatrix) to match alpha.8 wording.

No application logic changes in this diff—only spec reference and compliance metadata.

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[StefanBratanov]

LGTM