Autocomplete is inactive despite setting up

### 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

Linux 6.14.0-35-generic - Ubuntu 24.04.3 LTS

### Expected behaviour

- Log in to my desktop, Amazon Q starts successfully.
- I open my terminal emulator, start typing and Q autocomplete should show up.

### Actual behaviour

- Amazon Q starts successfully. Automated checks show no problem.
- I start typing in my terminal emulator. Q autocomplete does not show up.
- `q doctor` tells me: Autocomplete is currently inactive. Your desktop integration(s) may be broken!

### Steps to reproduce

_No response_

### Environment

```yaml

[q-details]
version = "1.19.3"
hash = "84b82da54996570ac369ec69911e29b524099761"
date = "2025-10-29T21:14:01.879583Z (10d ago)"
variant = "full"

[system-info]
chip = "Intel(R) Core(TM) i3-8145U CPU @ 2.10GHz"
total-cores = 2
memory = "7.58 GB"

[system-info.os.linux]
kernel_version = "6.14.0-35-generic"
id = "ubuntu"
name = "Ubuntu"
pretty_name = "Ubuntu 24.04.3 LTS"
version_id = "24.04"
version = "24.04.3 LTS (Noble Numbat)"

[environment]
cwd = "/home/USER/Documents"
cli-path = "/home/USER/Documents"
os = "Linux"
shell-path = "/usr/bin/bash"
shell-version = "5.2.21"
terminal = "Alacritty"
install-method = "unknown"

[env-vars]
DISPLAY = ":1"
GTK_IM_MODULE = "ibus"
PATH = "/home/USER/.gems/bin:/home/USER/.nvm/versions/node/v20.19.5/bin:/home/USER/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/home/USER/.local/bin"
QTERM_SESSION_ID = "4787e52a5c5d449a902d8cb5c03edb91"
QT_IM_MODULE = "ibus"
Q_SET_PARENT_CHECK = "1"
Q_TERM = "1.19.3"
SHELL = "/bin/bash"
TERM = "xterm-256color"
XDG_CURRENT_DESKTOP = "KDE"
XDG_SESSION_DESKTOP = "KDE"
XDG_SESSION_TYPE = "wayland"
XMODIFIERS = "@im=ibus"
```