Move registration of ReadRuntimeVersionExt to ExecutionExtension (#13820)

Instead of registering `ReadRuntimeVersionExt` in `sp-state-machine` it is moved to
`ExecutionExtension` which provides the default extensions.

substrate/utils/frame/benchmarking-cli/src/pallet/command.rs

@@ -35,7 +35,7 @@ use sp_core::{
 		testing::{TestOffchainExt, TestTransactionPoolExt},
 		OffchainDbExt, OffchainWorkerExt, TransactionPoolExt,
 	},
-	traits::CallContext,
+	traits::{CallContext, ReadRuntimeVersionExt},
 };
 use sp_externalities::Extensions;
 use sp_keystore::{testing::MemoryKeystore, KeystoreExt};
@@ -225,6 +225,7 @@ impl PalletCmd {
 			extensions.register(OffchainWorkerExt::new(offchain.clone()));
 			extensions.register(OffchainDbExt::new(offchain));
 			extensions.register(TransactionPoolExt::new(pool));
+			extensions.register(ReadRuntimeVersionExt::new(executor.clone()));
 			extensions
 		};