CI Request: Require all checks to pass on PRs

[kantai]

Currently, all tests (except for Clippy, which is fixed in my PR #5678) pass eventually in develop -- there are still a handful of flaky tests, but they can be re-run to get them to pass.

Getting all of them to pass should be a requirement for entering the merge queue: we've had a handful of PRs get through to develop which broke E2E tests, and we should stop doing that.

[kantai]

@wileyj

[jcnelson]

Seconded. Now that Nakamoto is out, this is a great time to adopt healthy code hygiene habits like this.

[wileyj]

this is enabled on a few branches as of today. running the release tests as well and will file issues to fix or remove from those workflows.