refactor: Use CoreAPI when possible (#15496)

Co-authored-by: Aleksandr Bezobchuk <alexanderbez@users.noreply.github.com>
Co-authored-by: Marko <marbar3778@yahoo.com>

x/slashing/module.go

@@ -35,7 +35,6 @@ import (
 const ConsensusVersion = 3
 
 var (
-	_ module.BeginBlockAppModule = AppModule{}
 	_ module.AppModuleBasic      = AppModuleBasic{}
 	_ module.AppModuleSimulation = AppModule{}
 )
@@ -120,7 +119,10 @@ func NewAppModule(cdc codec.Codec, keeper keeper.Keeper, ak types.AccountKeeper,
 	}
 }
 
-var _ appmodule.AppModule = AppModule{}
+var (
+	_ appmodule.AppModule       = AppModule{}
+	_ appmodule.HasBeginBlocker = AppModule{}
+)
 
 // IsOnePerModuleType implements the depinject.OnePerModuleType interface.
 func (am AppModule) IsOnePerModuleType() {}
@@ -168,8 +170,10 @@ func (am AppModule) ExportGenesis(ctx sdk.Context, cdc codec.JSONCodec) json.Raw
 func (AppModule) ConsensusVersion() uint64 { return ConsensusVersion }
 
 // BeginBlock returns the begin blocker for the slashing module.
-func (am AppModule) BeginBlock(ctx sdk.Context, req abci.RequestBeginBlock) {
-	BeginBlocker(ctx, req, am.keeper)
+func (am AppModule) BeginBlock(ctx context.Context) error {
+	c := sdk.UnwrapSDKContext(ctx)
+	BeginBlocker(c, am.keeper)
+	return nil
 }
 
 // AppModuleSimulation functions