Only store header state root (pallet-bridge-parachains) (#1701)
* store block number ++ state root in parachains pallet * fixed parachains finality APIs * (test commit) * removed test code * deduplicated code a bit * removed commented code * spelling * Update modules/parachains/src/lib.rs Co-authored-by: Adrian Catangiu <[email protected]> * Update modules/parachains/src/lib.rs Co-authored-by: Adrian Catangiu <[email protected]> * Update modules/parachains/src/mock.rs Co-authored-by: Adrian Catangiu <[email protected]> * added comment Co-authored-by: Adrian Catangiu <[email protected]>