Google Login missing from kiro-cli

### 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 5.15.167.4-microsoft-standard-WSL2 - Ubuntu 24.04.3 LTS

### Expected behaviour

I installed kiro in ubuntu but when i run kiro-cli i only have two login options, Builder ID and IDC Account. It does not have google account as an option.

### Actual behaviour

only have two login options, Builder ID and IDC Account

### Steps to reproduce

run kiro-cli

### Environment

```yaml

[q-details]
version = "1.23.0"
hash = "e6c9813d5497e3e0cd679870dc565bd96a29a300"
date = "2025-12-18T22:56:01.677586Z (3d ago)"
variant = "minimal"

[system-info]
chip = "AMD Ryzen 9 5900HS with Radeon Graphics"
total-cores = 8
memory = "19.24 GB"

[system-info.os.linux]
kernel_version = "5.15.167.4-microsoft-standard-WSL2"
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"
cli-path = "/home/USER"
os = "Linux"
shell-path = "/usr/bin/bash"
shell-version = "5.2.21"
install-method = "unknown"
in-wsl = true

[env-vars]
DISPLAY = ":0"
PATH = "/home/USER/.local/bin:/home/USER/.local/bin:/home/USER/.nvm/versions/node/v24.12.0/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/usr/lib/wsl/lib:/snap/bin"
SHELL = "/bin/bash"
TERM = "xterm-256color"
```

Reproduziere das Problem, indem du kiro-cli in der gemeldeten Ubuntu 24.04 WSL2-Umgebung ausführst, und verfolge dann den Login-Einstiegspunkt zurück, der die Optionen Builder ID und IDC Account anzeigt. Ermittle, wie Authentifizierungsanbieter ausgewählt werden, und überprüfe, dass die Arbeit abgeschlossen ist, wenn Google als verfügbare Anmeldeoption erscheint.

Vom Indexierungsmodell aus dem Issue-Text verfasst.