Prompt window remains open despite wallet timeout lockout triggering

**Describe the bug**

If my wallet locks due to timing out from inactivity, any prompts which were active at the time will remain open despite the underlying wallet having locked.

**To Reproduce**

Unlock your Beet wallet, create a prompt, go inactive for several minutes in order for the wallet timeout lock to trigger, navigate to still open prompt with a locked wallet.

**Expected behavior**

If a wallet is locked, the prompt window closes.

**Additional context**

Note: Attempts to approve prompts will fail whilst the wallet is locked, and new prompts will not trigger whilst locked.

Alternatively, since broadcasting whilst locked is impossible then it's not a security concern, we could allow the user to build up dozens of 15k op TRX over several hours & multiple wallet timeouts, then when prepared properly they can approve multiple in short succession..