fix(medusa): Allow filtering by handle and title as arrays (#11472)

**What**
- Allows filtering products in the Store API with an array value for both `handle` and `title`.

RESOLVES SUP-893

.changeset/loud-pets-own.md

@@ -0,0 +1,5 @@
+---
+"@medusajs/medusa": patch
+---
+
+fix(medusa): Allow filtering products by handle and title as either string or array of strings