Fix account linking

Closes #153 (closed), #158 (closed), #147 (closed)

pallets/distance/src/mock.rs

@@ -243,6 +243,7 @@ impl pallet_identity::Config for Test {
     type RemoveIdentityConsumers = ();
     type RuntimeEvent = RuntimeEvent;
     type WeightInfo = ();
+    type CheckAccountAllowed = ();
     #[cfg(feature = "runtime-benchmarks")]
     type BenchmarkSetupHandler = ();
 }