We now have access to keychain password on macos in CI for GUI enabled machines, this should allow us to programmatically unlock keychain and re-enable the tests.

First thing to do for this ticket is just to generally try that unlocking works as expected and we can add and retrieve passwords so that BUILD-14458 can be resolved.

Another thing worth doing in addition to re-enabling tests is adding a cleanup when tests finish: machines are still stateful, so leftover keychain entries can mess up the test runs potentially. This also should make running these tests locally easier when electron version is changed