Submission Review Guidelines:

• I have followed the WooCommerce Contributing Guidelines and the WordPress Coding Standards.
• I have checked to ensure there aren't other open Pull Requests for the same update/change.
• I have reviewed my code for security best practices.
• Following the above guidelines will result in quick merges and clear and detailed feedback when appropriate.

Changes proposed in this Pull Request:

Adds tinymce scripts so that the classic editor blocks work in the new product editing experience.

Closes #38118 .

How to test the changes in this Pull Request:

Using the WooCommerce Testing Instructions Guide, include your detailed testing instructions:

1. Navigate to Tools -> WCA Test Helper -> Features and enable the new product blocks editing experience
2. Navigate to Products -> Add new
3. Click on the "Add description" button
4. Add a classic editor block
5. Check that the classic editor block works as expected without console errors