Prompt to unlock account when interacting with actual wallet accounts

[jimmychu0807]

Describe the bug

When using development accounts (Alice, Bob, etc), I can interact fine with my contract, but when setting to an actual wallet account, sending a contract transaction yields a Call Error. Looking at the browser dev console sees the error message of:

Error: Cannot sign with a locked key pair

To Reproduce Steps to reproduce the behavior:

1. Go to https://contracts-ui.substrate.io/
2. Deploy a contract.
3. Set the Caller to a wallet account.
4. Send a transaction to the contract.

Expected behavior

I would expect Polkadot-js Extension will pop up a window to prompt me for password to unlock my keypair.

Screenshots