Add Discord error redirect, for user canceling on oauth screen
On Discord. If user click Cancel on the discord oauth screen, user gets redirected to something like https://vvfatfhruxzgfdfaefic.nhost.run/v1/auth/signin/provider/discord/callback?error=access_denied&error_description=The+resource+owner+or+authorization+server+denied+the+request&state=e821fa91-955a-4e2e-a338-215262334f65
Should instead, redirect to auth redirectTo target as if successful, but with error code like OauthCancelled so our website can display appropriate error for it and ask user to login again, and grant authorization on the oauth provider's screen.
Issue also applies to Twitch for example. Redirect on oauth cancellation should be applicable to all providers where applicable