fix(): Pricing preference context loss (#13626)

**What**
The context reference is being mutated by the repository leading to an empty context. Also, the filter is built from the pricing context instead of pricing context -> context leading to always fetch all preferences all the time

.changeset/cyan-horses-join.md

@@ -0,0 +1,7 @@
+---
+"@medusajs/pricing": patch
+"@medusajs/draft-order": patch
+"@medusajs/types": patch
+---
+
+fix(): Pricing preference context loss