tui crashes in v1.19.4

### Checks

- [x] I have searched [github.com/aws/amazon-q-developer-cli/issues](https://github.com/aws/amazon-q-developer-cli/issues?q=) and there are no duplicates of my issue
- [x] I have run `q doctor` in the affected terminal session
- [x] I have run `q restart` and replicated the issue again

### Operating system

macOS 26.4.0 (25E246)

### Expected behaviour

tui launches

### Actual behaviour

nothing happens

https://github.com/user-attachments/assets/80563fac-c5ab-4b73-bea0-472830458888

### Steps to reproduce

_No response_

### Environment

```yaml

[q-details]
version = "1.29.4"
hash = "b5dcf43e402cddd5a6507bf16fc9daba86f48c4e"
date = "2026-04-06T21:44:29.987555Z (6h ago)"
variant = "full"

[system-info]
os = "macOS 26.4.0 (25E246)"
chip = "Apple M3 Pro"
total-cores = 12
memory = "36.00 GB"

[environment]
cwd = "/Users/USER"
cli-path = "/Users/USER"
os = "Mac"
shell-path = "/bin/zsh"
shell-version = "5.9"
terminal = "iTerm 2"
install-method = "unknown"

[env-vars]
PATH =
QTERM_SESSION_ID = "6126cefbf01b4970b9dd5e2928f979c9"
Q_SET_PARENT_CHECK = "1"
Q_TERM = "1.29.4"
SHELL = "/bin/zsh"
TERM = "xterm-256color"
__CFBundleIdentifier = "com.googlecode.iterm2"
```