Add solution when item_selector not present

Closes #3355814

added 1 commit

• 64696e7c - Update migrate_plus.migration.product.yml

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added 20 commits

• 64696e7c...c1632b94 - 18 commits from branch project:6.0.x
• 95954025 - Add solution when item_selector not present
• c19e2594 - Update migrate_plus.migration.product.yml

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merged