fix(utils): More resilient object from string path (#5929)

**What**
More resilient util in case an undefined, nu,, '' value is passed as part of the relations

.changeset/mighty-jokes-prove.md

@@ -0,0 +1,5 @@
+---
+"@medusajs/utils": patch
+---
+
+Fix/utils object from string path

packages/utils/src/common/object-from-string-path.ts

@@ -49,6 +49,9 @@ export function objectFromStringPath(
   const output: Record<string, any> = {}
 
   for (const relation of collection) {
+    if (!relation) {
+      continue
+    }
     if (relation.indexOf(".") > -1) {
       const nestedRelations = relation.split(".")