Changes proposed in this Pull Request:

Fixes import product task to only appear when either woocommerce_products_task_layout_card or woocommerce_products_task_layout_stacked experiment is treatment

How to test the changes in this Pull Request:

1. Go to onboarding wizard's Business Features step
2. Set "Currently selling elsewhere" to "Yes, on other platform" and save
3. Install WooCommerce Admin Test Helper
4. Go to Tools > WCA Test Helper > Features
5. Enable experimental-import-products-task
6. Go to Tools > WCA Test Helper > Experiments
7. Enable treatment for either woocommerce_products_task_layout_stacked or woocommerce_products_task_layout_card for frontend
8. Go to the products task
9. Observe the import screen is displayed
10. Disable treatment for the experiment and refresh product task
11. Observe the old product task screen is displayed

Other information:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your changes, as applicable?
• Have you successfully run tests with your changes locally?
• Have you created a changelog file for each project being changed, ie pnpm nx changelog <project>?

FOR PR REVIEWER ONLY:

• I have reviewed that everything is sanitized/escaped appropriately for any SQL or XSS injection possibilities. I made sure Linting is not ignored or disabled.