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/finality-grandpa/src/import.rs

@@ -534,7 +534,7 @@ where
 
 		// early exit if block already in chain, otherwise the check for
 		// authority changes will error when trying to re-import a change block
-		match self.inner.status(BlockId::Hash(hash)) {
+		match self.inner.status(hash) {
 			Ok(BlockStatus::InChain) => {
 				// Strip justifications when re-importing an existing block.
 				let _justifications = block.justifications.take();