Allow skipping airgap check

[johnuopini]

Hello,
I know the security implications of my request still i guess there are many users that might want to be able to use this app with a less strict environment so i think there should be a way to use the app without an air gapped environment. Implementing this would be easy since it would be just a checkmark on the airgap page with maybe a warning dialog and a "do not ask me again" option.

The main use case would be for people that wants to use the desktop for dapps without having to carry an additional device around and without having to use an hot wallet on the desktop which is generally a WAY less safe environment than a mobile device.

I don't understand why having an hot wallet on a mobile phone is ok (like Nova) while having the signer is not. For example i might want to use polkadot.js on 2/3 desktop devices without having to carry around an additional device and without having to add a hot wallet to any of them.

I understand i could basically go into airplane mode BEFORE using the app and then go back but i don't see any added security in doing this vs being able to use the vault even when online.