Allow import withouth state verification (#4031)

* Allow import without state verification

* Explicit None

Co-Authored-By: Robert Habermeier <rphmeier@gmail.com>

substrate/core/consensus/babe/src/lib.rs

@@ -430,6 +430,7 @@ impl<B, C, E, I, Error, SO> slots::SimpleSlotWorker<B> for BabeWorker<B, C, E, I
 				// option to specify one.
 				// https://github.com/paritytech/substrate/issues/3623
 				fork_choice: ForkChoiceStrategy::LongestChain,
+				allow_missing_state: false,
 			}
 		})
 	}
@@ -741,6 +742,7 @@ impl<B, E, Block, RA, PRA> Verifier<Block> for BabeVerifier<B, E, Block, RA, PRA
 					// option to specify one.
 					// https://github.com/paritytech/substrate/issues/3623
 					fork_choice: ForkChoiceStrategy::LongestChain,
+					allow_missing_state: false,
 				};
 
 				Ok((block_import_params, Default::default()))

substrate/core/consensus/babe/src/tests.rs

@@ -578,6 +578,7 @@ fn propose_and_import_block(
 			finalized: false,
 			auxiliary: Vec::new(),
 			fork_choice: ForkChoiceStrategy::LongestChain,
+			allow_missing_state: false,
 		},
 		Default::default(),
 	).unwrap();