Initial purchaser edit modal.

[stratease]

🎫 Ticket

ET-2164

🗒️ Description

Edit purchaser modal.

🎥 Artifacts

✔️ Checklist

• [x] Ran npm run changelog to add changelog file(s). More info here
• [ ] Code is covered by NEW wpunit or integration tests.
• [ ] Code is covered by EXISTING wpunit or integration tests.
• [x] Are all the required tests passing?
• [ ] Automated code review comments are addressed.
• [x] Have you added Artifacts?
• [x] Check the base branch for your PR.
• [ ] Add your PR to the project board for the release.