Check ChainSpec consistency with upstream config.yaml (#9008)

Closes:

- https://github.com/sigp/lighthouse/issues/9002


  - Commit `config.yaml` for minimal and mainnet to `consensus/types/configs`. For now we omit any auto-downloading logic, to avoid the hassles of dealing with Github rate limits etc on CI. Unfortunately these files are NOT bundled inside the spec tests.
- Fix the values of `min_builder_withdrawability_delay` for minimal and mainnet. These discrepancies aren't caught by the current spec tests, because the spec tests are missing data: https://github.com/ethereum/consensus-specs/pull/5005. Will be fixed in the next release/when we update to nightly.
- Fix the blob schedule for `minimal`, which should be empty, NOT inherited from mainnet.
- Keep `SECONDS_PER_SLOT` for now because the Kurtosis tests fail upon their complete removal. We will be able to completely remove `SECONDS_PER_SLOT` soon.


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

beacon_node/http_api/tests/interactive_tests.rs

@@ -975,9 +975,10 @@ async fn proposer_duties_with_gossip_tolerance() {
     assert_eq!(harness.chain.slot().unwrap(), num_initial);
 
     // Set the clock to just before the next epoch.
-    harness.chain.slot_clock.advance_time(
-        Duration::from_secs(spec.seconds_per_slot) - spec.maximum_gossip_clock_disparity(),
-    );
+    harness
+        .chain
+        .slot_clock
+        .advance_time(spec.get_slot_duration() - spec.maximum_gossip_clock_disparity());
     assert_eq!(
         harness
             .chain
@@ -1081,9 +1082,10 @@ async fn proposer_duties_v2_with_gossip_tolerance() {
     assert_eq!(harness.chain.slot().unwrap(), num_initial);
 
     // Set the clock to just before the next epoch.
-    harness.chain.slot_clock.advance_time(
-        Duration::from_secs(spec.seconds_per_slot) - spec.maximum_gossip_clock_disparity(),
-    );
+    harness
+        .chain
+        .slot_clock
+        .advance_time(spec.get_slot_duration() - spec.maximum_gossip_clock_disparity());
     assert_eq!(
         harness
             .chain