Fix/race receive block (#13700)

* blob save: add better data checking for empty blob issues (#13647)

(cherry picked from commit daad29d)

* avoid part path collisions with mem addr entropy (#13648)

* avoid part path collisions with mem addr entropy

* Regression test

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Co-authored-by: Kasey Kirkham <kasey@users.noreply.github.com>
Co-authored-by: Preston Van Loon <pvanloon@offchainlabs.com>
(cherry picked from commit 4c66e4d)

* fix error race

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Co-authored-by: Preston Van Loon <pvanloon@offchainlabs.com>
Co-authored-by: kasey <489222+kasey@users.noreply.github.com>

beacon-chain/blockchain/receive_block.go

@@ -97,6 +97,7 @@ func (s *Service) ReceiveBlock(ctx context.Context, block interfaces.ReadOnlySig
 	eg, _ := errgroup.WithContext(ctx)
 	var postState state.BeaconState
 	eg.Go(func() error {
+		var err error
 		postState, err = s.validateStateTransition(ctx, preState, blockCopy)
 		if err != nil {
 			return errors.Wrap(err, "failed to validate consensus state transition function")
@@ -105,6 +106,7 @@ func (s *Service) ReceiveBlock(ctx context.Context, block interfaces.ReadOnlySig
 	})
 	var isValidPayload bool
 	eg.Go(func() error {
+		var err error
 		isValidPayload, err = s.validateExecutionOnBlock(ctx, preStateVersion, preStateHeader, blockCopy, blockRoot)
 		if err != nil {
 			return errors.Wrap(err, "could not notify the engine of the new payload")