autocompleation not working

### 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 26.5.0 (25F71)

### Expected behaviour

autofill not enabled

### Actual behaviour

.

### Steps to reproduce

_No response_

### Environment

```yaml

[q-details]
version = "2.4.0"
hash = "da457ad7e4bc0693d1f094f7571fb87091a0e406"
date = "2026-05-20T19:18:35.988733Z (1d ago)"
variant = "full"

[system-info]
os = "macOS 26.5.0 (25F71)"
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 = "brew"

[env-vars]
PATH = "/Users/USER/.nvm/versions/node/v20.20.2/bin:/opt/homebrew/bin:/opt/homebrew/sbin:/Library/Frameworks/Python.framework/Versions/3.13/bin:/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:/pkg/env/global/bin:/Applications/cmux.app/Contents/Resources/bin:/Users/USER/.local/bin:/Users/USER/Library/Application Support/JetBrains/Toolbox/scripts"
QTERM_SESSION_ID = "8ac7a119f9d44927b5527e817fac2c0b"
Q_SET_PARENT_CHECK = "1"
Q_TERM = "2.4.0"
SHELL = "/bin/zsh"
TERM = "xterm-ghostty"
__CFBundleIdentifier = "com.cmuxterm.app"
```