Fun fact: The gas inlet to the cooker is still a manual valve. It doesn't matter if the ignition is shorting all over the place because there is a physical control that must be twisted to let gas into the system.
No, as Art has found out to his cost, the worst that can happen is that a circuit breaker trips. If that doesn't happen quick enough for you, you can follow his example and trigger an overload by rapidly cycling the isolator switch.
I wonder if they'll need Crazy Boris to rewire the kitchen to fix this mess?