GH Actions: Cypress test on Windows Edge and Mac WebKit

[MetRonnie]

Supersedes #1141

Check List

• [x] I have read CONTRIBUTING.md and added my name as a Code Contributor.
• [x] Contains logically grouped changes (else tidy your branch by rebase).
• [x] Does not contain off-topic changes (use other PRs for other changes).

[MetRonnie]

Webkit E2E test failing: #1528