When creating products via a spreadsheet import, the import would fail if the product handle was already in use by another product in your store. This could be frustrating when importing products with handles that happen to overlap with existing ones.
We already had logic to handle this situation for bulk edits — automatically appending a random suffix to make the handle unique — but it was missing from the import path. Now, when creating products via import, the app automatically retries with a unique handle if a conflict is detected, matching the existing behavior for edits.
