Re-enable e2e tests

[kahboom]

Please describe the task that needs to be done

Now that the main issues with the code editor have been resolved, we should be able to add back e2e tests.

• Create common happy paths
• Update existing e2e tests
• Add any missing e2e tests
• Update relevant API keys where necessary
• Ensure e2e tests are run on each PR

Tests should only be run against the main branch, not for forks. Relates to #1100.

[tplevko]

Hi @kahboom I don't think there are any more steps to be taken from our side - no API keys updates needed AFAIK, so I think the PR checks can be enabled. I don't have permissions on the repo to do that, so could you have a look, whether this can be enabled?

[kahboom]

@tplevko no worries I will take a look, thank you for all of your help with this!

[tplevko]

@kahboom closing this as the e2e tests are already reenabled on PR's. Thanks for helping out with this.