Allow Polkadot Generic Ledger App to work with Any network #1585
Description
Currently when a user wants to import an account with their Ledger, the extension prompts them to choose a network. This makes it so that this imported account will only be usable on the selected network.
However, with the new Polkadot Ledger App, the user can use the same account and the same Ledger App on multiple chains, therefore we should allow users to pick Any chain or more than one chain if they wanted to.
Specifically for us at the PDP this is a problem because all new launched chains are compatible with Ledger (thanks to the CheckMetadataHash), however no user will be able to use PJS as these networks are new and not part of the selection list.