Process blind withdrawals (#11995)

* Update head before block proposal

* fix e2e runs

* Can process blind withdrwals

* Rm bad change

* Should be in process payload header

* Version check

* Compare roots

* Typo

* Remove redundant checks

* Add tests

* Rm errors

---------

Co-authored-by: nisdas <nishdas93@gmail.com>
Co-authored-by: prylabs-bulldozer[bot] <58059840+prylabs-bulldozer[bot]@users.noreply.github.com>

consensus-types/blocks/execution.go

@@ -36,6 +36,11 @@ func (e executionPayload) IsNil() bool {
 	return e.p == nil
 }
 
+// IsBlinded returns true if the underlying data is blinded.
+func (e executionPayload) IsBlinded() bool {
+	return false
+}
+
 // MarshalSSZ --
 func (e executionPayload) MarshalSSZ() ([]byte, error) {
 	return e.p.MarshalSSZ()
@@ -192,6 +197,11 @@ func (e executionPayloadHeader) IsNil() bool {
 	return e.p == nil
 }
 
+// IsBlinded returns true if the underlying data is a header.
+func (e executionPayloadHeader) IsBlinded() bool {
+	return true
+}
+
 // MarshalSSZ --
 func (e executionPayloadHeader) MarshalSSZ() ([]byte, error) {
 	return e.p.MarshalSSZ()
@@ -377,6 +387,11 @@ func (e executionPayloadCapella) IsNil() bool {
 	return e.p == nil
 }
 
+// IsBlinded returns true if the underlying data is blinded.
+func (e executionPayloadCapella) IsBlinded() bool {
+	return false
+}
+
 // MarshalSSZ --
 func (e executionPayloadCapella) MarshalSSZ() ([]byte, error) {
 	return e.p.MarshalSSZ()
@@ -534,6 +549,11 @@ func (e executionPayloadHeaderCapella) IsNil() bool {
 	return e.p == nil
 }
 
+// IsBlinded returns true if the underlying data is blinded.
+func (e executionPayloadHeaderCapella) IsBlinded() bool {
+	return true
+}
+
 // MarshalSSZ --
 func (e executionPayloadHeaderCapella) MarshalSSZ() ([]byte, error) {
 	return e.p.MarshalSSZ()

consensus-types/interfaces/beacon_block.go

@@ -102,6 +102,7 @@ type ExecutionData interface {
 	ssz.Unmarshaler
 	ssz.HashRoot
 	IsNil() bool
+	IsBlinded() bool
 	Proto() proto.Message
 	ParentHash() []byte
 	FeeRecipient() []byte