add method SetParentChainHeight to cross chain contract.

contract/AElf.Contracts.CrossChain/CrossChainContract.Hotfix.cs

@@ -0,0 +1,13 @@
+using Google.Protobuf.WellKnownTypes;
+
+namespace AElf.Contracts.CrossChain;
+
+public partial class CrossChainContract
+{
+    public override Empty SetParentChainHeight(Int64Value input)
+    {
+        AssertAddressIsCurrentMiner(Context.Sender);
+        State.CurrentParentChainHeight.Value = input.Value;
+        return new Empty();
+    }
+}

protobuf/cross_chain_contract.proto

@@ -65,6 +65,9 @@ service CrossChainContract {
         option (aelf.is_view) = true;
     }
 
+    rpc SetParentChainHeight (google.protobuf.Int64Value) returns (google.protobuf.Empty) {
+    }
+
     // Get the chain id of parent chain.
     rpc GetParentChainId (google.protobuf.Empty) returns (google.protobuf.Int32Value) {
         option (aelf.is_view) = true;