BlockId removal: refactor: HeaderBackend::status (#12981)

It changes the arguments of `HeaderBackend::status` method from: `BlockId<Block>` to: `Block::Hash`

This PR is part of BlockId::Number refactoring analysis (paritytech/substrate#11292)

Co-authored-by: parity-processbot <>

substrate/client/authority-discovery/src/worker/tests.rs

@@ -78,7 +78,7 @@ impl<Block: BlockT> HeaderBackend<Block> for TestApi {
 
 	fn status(
 		&self,
-		_id: BlockId<Block>,
+		_hash: Block::Hash,
 	) -> std::result::Result<sc_client_api::blockchain::BlockStatus, sp_blockchain::Error> {
 		Ok(sc_client_api::blockchain::BlockStatus::Unknown)
 	}