You need to allow non-admins to use hotwallets for their stores (in /server/policies)

Sending on-chain funds from the app generated wallet requires for some reason hot wallets to be enabled on the server? Is there a reason for this?


To replicate:

1. Deploy 2 apps and 1 server
2. Register 2 different app accounts `user 1` and `user 2`
3. Enable Cheat mode to fund `user 1 wallet`
4. Keypad pos in `User 2 app`, generate invoice
5. Pay invoice from `user 1 app` to `user 2 keypad`
6. See the error

Start in /server/policies and reproduce the two-app, one-server flow described in the issue, using the keypad POS invoice and the funded wallet. Trace the policy check that rejects the non-admin store account. Done means the non-admin account can pay the invoice from its app-generated wallet without requiring server-wide hotwallet access.

Written by the indexing model from the issue text.