fix(product-reviews): fetch product_review relation on order line items in upsert workflow

[dwene]

Problem

Fixes #33

When calling sdk.store.productReviews.upsert, the upsert workflow fetches the order and its line items to determine whether to create or update a review. However, the query only included items.*, which fetches shallow fields on each line item — it does not traverse the product_review link.

As a result, lineItem.product_review was always undefined, so the workflow always fell into the create path and never updated an existing review.

Fix

Add "items.product_review.*" to the useQueryGraphStep fields so Medusa's query graph traverses the link and returns the existing product review (if any) for each line item.

- fields: ["*", "shipping_address.*", "customer.*", "items.*"],
+ fields: ["*", "shipping_address.*", "customer.*", "items.*", "items.product_review.*"],

Summary by CodeRabbit

• New Features
  • Product review data is now included in order queries, enabling access to associated product reviews alongside order information for enhanced data integration across workflows.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 45ae9c2a-ea61-48ee-aec1-88c55a71c188

📥 Commits

Reviewing files that changed from the base of the PR and between cd56d4d and 1e3afd3.

📒 Files selected for processing (1)

• plugins/product-reviews/src/workflows/upsert-product-reviews.ts

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Walkthrough

The order query in the upsert-product-reviews workflow was extended to include product review fields from order items by adding "items.product_review.*" to the field set. This enables the workflow to retrieve product review data associated with each order item.

Changes

Cohort / File(s)	Summary
Product Review Query Extension plugins/product-reviews/src/workflows/upsert-product-reviews.ts	Added "items.product_review.*" to the order query field set to retrieve product review data from order items, enabling the upsert workflow to access associated product review information.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: adding product_review relation fetching to the upsert workflow's order query.
Linked Issues check	✅ Passed	The code change directly addresses issue #33 by fetching the product_review relation on line items, enabling proper upsert logic instead of always creating new reviews.
Out of Scope Changes check	✅ Passed	The single-line change only adds 'items.product_review.*' to the query fields, directly addressing the root cause identified in issue #33 without introducing unrelated modifications.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

• 📝 Generate docstrings (stacked PR)
• 📝 Generate docstrings (commit on current branch)

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/upsert-product-review-line-item-query

📝 Coding Plan

• Generate coding plan for human review comments

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