fix: update GetHeight function to return 0 when height is not defined…

… in the payload (#58)

modules/actions/types/handler.go

@@ -1,8 +1,6 @@
 package types
 
 import (
-	"fmt"
-
 	"github.com/forbole/juno/v5/node"
 
 	modulestypes "github.com/forbole/bdjuno/v4/modules/types"
@@ -25,11 +23,7 @@ func NewContext(node node.Node, sources *modulestypes.Sources) *Context {
 // GetHeight uses the lastest height when the input height is empty from graphql request
 func (c *Context) GetHeight(payload *Payload) (int64, error) {
 	if payload == nil || payload.Input.Height == 0 {
-		latestHeight, err := c.node.LatestHeight()
-		if err != nil {
-			return 0, fmt.Errorf("error while getting chain latest block height: %s", err)
-		}
-		return latestHeight, nil
+		return 0, nil
 	}
 
 	return payload.Input.Height, nil