Refactored thank you page to avoid using flash message

[peterhudec]

Description of change

This PR fixes some discrepancies of the export wins thank you page with the designs.

Test instructions

1. Go to /companies/:company-id/exportwins/create to create a new export win
   • In the third step of the form set Company contacts field to a contact with your email address so you get access to the export win review token.
   • Once you receive the email, click the Review win link which should take you to /exportwins/review/:token
2. Once on /exportwins/review/:token
3. Select the I confirm this information is correct radio
4. Fill out the rest of the form and finally hit the Confirm and send button
5. It should redirect you to /exportwins/review-win/thankyou?agree=yes where you should see
   • Header with big "Export win reviewed" heading
   • A green box saying "Thank you for taking time to review this export win."
6. Repeat steps 1 and 2
7. Select the Some of this information needs revising radio
8. Fill out the rest of the form and finally hit the Confirm and send button
9. It should redirect you to /exportwins/review-win/thankyou?agree=no where you should see
   • Header with big "Export win reviewed and changes are needed"" heading
   • A green box with two paragraphs with these texts:
     1. "Thank you for reviewing this export win."
     2. "As you have asked for some changes to be made, we will review your comments and may need to contact you if we need more information."

Screenshots

Before

After

[cypress]

Passing run #52003 ↗︎

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Details:

Refactored thank you page to avoid using flash message
Project: data-hub-frontend	Commit: 884f8afc2d
Status: Passed	Duration: 08:43 💡
Started: Mar 18, 2024 2:16 PM	Ended: Mar 18, 2024 2:24 PM

Review all test suite changes for PR #6618 ↗︎