Gloas beacon block validation update

[ahshum]

Cover the changes of

There are no new validations for this topic. However, all validations with
regards to the ExecutionPayload are removed:

• If execution_payload verification of block's parent by an execution node is
  not complete:
  • [REJECT] The block's parent (defined by block.parent_root) passes all
    validation (excluding execution node verification of the
    block.body.execution_payload).
• otherwise:
  • [IGNORE] The block's parent (defined by block.parent_root) passes all
    validation (including execution node verification of the
    block.body.execution_payload).

And instead the following validations are set in place with the alias
bid = signed_execution_payload_bid.message:

• If execution_payload verification of block's execution payload parent by an
  execution node is complete:
  • [REJECT] The block's execution payload parent (defined by
    bid.parent_block_hash) passes all validation.
• [REJECT] The bid's parent (defined by bid.parent_block_root) equals the
  block's parent (defined by block.parent_root).

[github-actions]

Unit Test Results

       12 files  ±0    2 432 suites  ±0   42m 54s ⏱️ - 5m 57s
12 658 tests ±0  12 093 ✔️ ±0  565 💤 ±0  0 ❌ ±0 
63 636 runs  ±0  62 908 ✔️ ±0  728 💤 ±0  0 ❌ ±0 

Results for commit e244313. ± Comparison against base commit 60d0024.

♻️ This comment has been updated with latest results.