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/test-utils/client/src/lib.rs

@@ -290,12 +290,13 @@ impl<Block: BlockT, D, Backend, G: GenesisInit>
 		});
 		let executor = LocalCallExecutor::new(
 			self.backend.clone(),
-			executor,
+			executor.clone(),
 			Default::default(),
 			ExecutionExtensions::new(
 				self.execution_strategies.clone(),
 				self.keystore.clone(),
 				sc_offchain::OffchainDb::factory_from_backend(&*self.backend),
+				Arc::new(executor),
 			),
 		)
 		.expect("Creates LocalCallExecutor");