Make max_blobs_per_block a config parameter (#6329)

* First pass

* Add restrictions to RuntimeVariableList api

* Use empty_uninitialized and fix warnings

* Fix some todos

* Merge branch 'unstable' into max-blobs-preset

* Fix take impl on RuntimeFixedList

* cleanup

* Fix test compilations

* Fix some more tests

* Fix test from unstable

* Merge branch 'unstable' into max-blobs-preset

* Merge remote-tracking branch 'origin/unstable' into max-blobs-preset

* Remove footgun function

* Minor simplifications

* Move from preset to config

* Fix typo

* Revert "Remove footgun function"

This reverts commit de01f923c7.

* Try fixing tests

* Thread through ChainSpec

* Fix release tests

* Move RuntimeFixedVector into module and rename

* Add test

* Remove empty RuntimeVarList awefullness

* Fix tests

* Simplify BlobSidecarListFromRoot

* Merge remote-tracking branch 'origin/unstable' into max-blobs-preset

* Bump quota to account for new target (6)

* Remove clone

* Fix issue from review

* Try to remove ugliness

* Merge branch 'unstable' into max-blobs-preset

* Fix max value

* Fix doctest

* Fix formatting

* Fix max check

* Delete hardcoded max_blobs_per_block in RPC limits

* Merge remote-tracking branch 'origin/unstable' into max-blobs-preset

beacon_node/lighthouse_network/src/rpc/handler.rs

@@ -855,7 +855,8 @@ where
         }
 
         let (req, substream) = substream;
-        let max_responses = req.max_responses();
+        let max_responses =
+            req.max_responses(self.fork_context.current_fork(), &self.fork_context.spec);
 
         // store requests that expect responses
         if max_responses > 0 {
@@ -924,7 +925,8 @@ where
         }
 
         // add the stream to substreams if we expect a response, otherwise drop the stream.
-        let max_responses = request.max_responses();
+        let max_responses =
+            request.max_responses(self.fork_context.current_fork(), &self.fork_context.spec);
         if max_responses > 0 {
             let max_remaining_chunks = if request.expect_exactly_one_response() {
                 // Currently enforced only for multiple responses