Companion for contracts: Replace cargo feature unstable-interface with config (#1916)

* contracts: Add `UnsafeUnstableInterface`

* update lockfile for {"substrate", "polkadot"}

Co-authored-by: parity-processbot <>

parachains/runtimes/contracts/contracts-rococo/Cargo.toml

@@ -47,7 +47,7 @@ pallet-transaction-payment = { git = "https://github.com/paritytech/substrate",
 pallet-transaction-payment-rpc-runtime-api = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
 pallet-utility = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
 pallet-sudo = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
-pallet-contracts = { git = "https://github.com/paritytech/substrate", default-features = false, features = ["unstable-interface"], branch = "master" }
+pallet-contracts = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
 pallet-contracts-primitives = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
 
 # Polkadot

parachains/runtimes/contracts/contracts-rococo/src/contracts.rs

@@ -4,7 +4,7 @@ use crate::{
 };
 use frame_support::{
 	parameter_types,
-	traits::{ConstU32, Nothing},
+	traits::{ConstBool, ConstU32, Nothing},
 	weights::Weight,
 };
 use pallet_contracts::{
@@ -57,4 +57,5 @@ impl Config for Runtime {
 	type AddressGenerator = DefaultAddressGenerator;
 	type MaxCodeLen = ConstU32<{ 128 * 1024 }>;
 	type MaxStorageKeyLen = ConstU32<128>;
+	type UnsafeUnstableInterface = ConstBool<true>;
 }