Allow e2e workflow to run correctly on forked repos

[spwoodcock]

Describe the bug

• The e2e github workflow runs fine on deploy, and on PRs from those with repo access.
• The workflow consistently fails on PRs from forked repos.
• This suggests a permission issue and needs to be investigated.

To Reproduce

Check workflows running in PRs from @NSUWAL123

He uses a forked repo in the team, specifically for identifying these sorts of issues 👍

Expected behavior

• The workflow runs and tests complete.
• This is an interesting issue as it's causing timeouts in playwright, not permission issues as far as I can tell.
• Perhaps a good place to start debugging is the github environment used? Maybe a forked repo doesn't have permission to use the vars there, causing the URLs to be wrong and a timeout?