bug: Theme menu gets cutoff, unscrollable

### 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 sequoia v15.3.1

### Expected behaviour

Scrollable theme menu to choose from all themes. Full list of themes are not listed in the menu as well.

(poked around and noticed all the themes are not listed in the menu, manually had to change theme to catppuccin)

### Actual behaviour


unscrollable menu and theme menu gets cut off.

### Steps to reproduce

_No response_

### Environment

```yaml
[q-details]
version = "1.6.2"
hash = "bb84e91b4e9005a265e24105c5d3c84a9fd7ed0c"
date = "2025-02-18T23:26:10.407704Z (2d ago)"
variant = "full"

[system-info]
os = "macOS 15.3.1 (24D70)"
chip = "Apple M2"
total-cores = 8
memory = "8.00 GB"

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

[env-vars]
PATH = "/opt/homebrew/bin/python3:/Users/USER/.cargo/bin:/Users/USER/.bun/bin:/Library/Frameworks/Python.framework/Versions/3.12/bin:/opt/homebrew/bin:/opt/homebrew/sbin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin:/Library/Apple/usr/bin:/Users/USER/.cargo/bin:/Applications/Ghostty.app/Contents/MacOS:/Users/USER/.local/bin:/Users/USER/.spicetify"
QTERM_SESSION_ID = "038a020422c94409a969e86e8983d7b6"
Q_SET_PARENT_CHECK = "1"
Q_TERM = "1.6.2"
SHELL = "/bin/zsh"
TERM = "xterm-ghostty"
__CFBundleIdentifier = "com.mitchellh.ghostty"
```