PDF Backup - Password modal stays presented when returning to app

[tw0po1nt]

Describe the issue

Please provide a general summary of the issue you're experiencing

After successfully exporting a password encrypted PDF backup of the seed phrase, when returning to the app, the password entry modal remains visible.

Can you reliably reproduce the issue?

If so, please list the steps to reproduce below:

1. Launch Nighthawk
2. Create a new wallet or import an existing wallet from seed.
3. Navigate to the settings tab.
4. Choose backup your wallet and choose 'view seed' on the confirmation modal.
5. Tap 'export as PDF', enter a password and tap 'Export pdf'
6. Choose 'save to files' in the system share sheet.
7. Save the file (or cancel the share sheet)

Expected behaviour

Tell us what should happen
When returning to the app, the user should be on the seed phrase view, with no modal presented.

Actual behaviour + errors

Tell us what happens instead including any noticeable error output (any messages
displayed on-screen when e.g. a crash occurred)

The password entry modal remains visible.

• App Version: 2.2.08
• iOS Version: 17.0.3
• Device: (if applies) iPhone 14 Pro Max

Any extra information that might be useful in the debugging process.