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"
```

在报告的 Ubuntu 24.04 WSL2 环境中运行 kiro-cli 以重现问题，然后跟踪显示 Builder ID 和 IDC Account 选项的登录入口。确定身份验证提供程序是如何选择的，并验证当 Google 显示为可用的登录选项时工作已完成。

由索引模型根据 Issue 内容生成。