Extract consensus changes from gloas-envelope-processing

consensus/types/tests/state.rs

@@ -55,6 +55,15 @@ async fn build_state<E: EthSpec>(validator_count: usize) -> BeaconState<E> {
         .head_beacon_state_cloned()
 }
 
+// TODO(EIP-7732): Add tests for PTC (Payload Timeliness Committee) functions:
+// - get_ptc: Test committee selection, size, balance-weighted selection
+// - get_ptc_attester_seed: Test seed generation and determinism
+// - compute_balance_weighted_selection: Test selection algorithm with various balances
+// - compute_balance_weighted_acceptance: Test acceptance probability
+// These tests require being able to build Gloas states with initialized committee caches,
+// which currently fails due to incomplete Gloas block structure as mentioned here:
+// https://github.com/sigp/lighthouse/pull/8273
+// Similar to existing committee_consistency_test suite for get_beacon_committee.
 async fn test_beacon_proposer_index<E: EthSpec>() {
     let spec = E::default_spec();