fix(app): prevent unpause from 'p' release event

[dstapl]

Summary

Fix a bug where the program could unpause unexpectedly - after a short delay - when running in Windows CMD.
Windows CMD also sends a key release event (event::KeyEventKind::Release) which was being matched by the KeyCode::Char('p') arm.

Changes

• Updated the KeyCode::Char('p') match arm so that pausing requires a press event (event::KeyEventKind::Press) to trigger.

Verification

• cargo fmt --all -- --check
• cargo clippy --all-targets --all-features -- -D warnings
• cargo test --all-targets --all-features

Notes

I moved the if check inside the match arm to allow for any future key hold behavior. However, this could also be placed directly below the if let statement instead, since the other keys just quit the program.

[Hyena0x]

Thanks for the contribution. This is a clean fix for a real cross-platform input bug. Really appreciate it!