Fix: add parent product to id

[ahuininga-orisha]

Description

This PR addresses an issue in the Grouped Export where simple products linked to multiple parent products (e.g., two or more configurables) caused the Tweakwise import to fail due to duplicate IDs.

Changes

To ensure unique identifiers, the logic for generating item IDs in the grouped export has been updated:

• With Configurable Parent: The ID is now formatted as {simple_id}-{parent_id}.
• Without Configurable Parent: The ID defaults to {simple_id}-{simple_id}.

Caution

Breaking Change
This modification breaks compatibility with events in the Magento 2 Tweakwise module. If you utilize the grouped export alongside these events, you must update the Magento 2 Tweakwise module accordingly.

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How to Test

Verify the fix using a mix of Configurable, Bundle, Grouped, and Individually Visible Simple products.

1. Non-Grouped Export (Regression Testing)

Perform an export and publish. Verify that products are correctly displayed on the following pages:

• Lister Page
• Recommendations
• Suggestions
• Search
• ALP

2. Grouped Export (Fix Verification)

1. Assign a single Simple Product to two different Configurable Products.
2. Run the export.
3. Verify: Ensure the Tweakwise import completes successfully without duplicate ID errors.
4. Publish and verify product visibility on:
   • Lister Page
   • Recommendations
   • Suggestions
   • Search
   • ALP