Skipping unconnectable providers hides OAuth-only providers when the deployment has no OAuth credentials configured, which is the case in e2e. The test asserted SLACK (OAuth-only) is present, so it now fails. Assert on API-key providers instead, which are connectable regardless of OAuth configuration. Signed-off-by: Aurélien Sibiril <81782+aureliensibiril@users.noreply.github.com>