fix(baseapp): return events from preblocker in FinalizeBlockResponse (#21159)

baseapp/abci.go

@@ -789,6 +789,7 @@ func (app *BaseApp) internalFinalizeBlock(ctx context.Context, req *abci.Finaliz
 	if err := app.preBlock(req); err != nil {
 		return nil, err
 	}
+	events = append(events, app.finalizeBlockState.ctx.EventManager().ABCIEvents()...)
 
 	beginBlock, err := app.beginBlock(req)
 	if err != nil {

baseapp/abci_test.go

@@ -2298,13 +2298,16 @@ func TestBaseApp_PreBlocker(t *testing.T) {
 	wasHookCalled := false
 	app.SetPreBlocker(func(ctx sdk.Context, req *abci.FinalizeBlockRequest) error {
 		wasHookCalled = true
+		ctx.EventManager().EmitEvent(sdk.NewEvent("preblockertest", sdk.NewAttribute("height", fmt.Sprintf("%d", req.Height))))
 		return nil
 	})
 	app.Seal()
 
-	_, err = app.FinalizeBlock(&abci.FinalizeBlockRequest{Height: 1})
+	res, err := app.FinalizeBlock(&abci.FinalizeBlockRequest{Height: 1})
 	require.NoError(t, err)
 	require.Equal(t, true, wasHookCalled)
+	require.Len(t, res.Events, 1)
+	require.Equal(t, "preblockertest", res.Events[0].Type)
 
 	// Now try erroring
 	app = baseapp.NewBaseApp(name, logger, db, nil)