Gloas spec v1.7.0-alpha.5 and beacon_chain tests (#8998)

Fix database pruning post-Gloas


  - Fix DB pruning logic (and state summaries DAG)
- Get the `beacon_chain` tests running with `FORK_NAME=gloas` 🎉


Co-Authored-By: Michael Sproul <michael@sigmaprime.io>

Co-Authored-By: Jimmy Chen <jchen.tc@gmail.com>

Co-Authored-By: Eitan Seri- Levi <eserilev@gmail.com>

Co-Authored-By: dapplion <35266934+dapplion@users.noreply.github.com>

Co-Authored-By: Eitan Seri-Levi <eserilev@ucsc.edu>

beacon_node/beacon_chain/src/payload_envelope_streamer/tests.rs

@@ -65,13 +65,12 @@ fn build_chain(
                 message: ExecutionPayloadEnvelope {
                     payload: ExecutionPayloadGloas {
                         block_hash,
+                        slot_number: slot,
                         ..Default::default()
                     },
                     execution_requests: Default::default(),
                     builder_index: 0,
                     beacon_block_root: block_root,
-                    slot,
-                    state_root: Hash256::zero(),
                 },
                 signature: Signature::empty(),
             })