Data race in pam/integration-tests

[adombeck]

From https://github.com/ubuntu/authd/actions/runs/12433665315/job/34715717561?pr=663:

github.com/ubuntu/authd/pam/integration-tests
TestCLIAuthenticate/Exit_if_authd_is_stopped
[...]
==================e
WARNING: DATA RACE
Read at 0x00c000366500 by goroutine 39:
github.com/charmbracelet/bubbles/cursor.(*Model).BlinkCmd.func1()
/home/runner/go/pkg/mod/github.com/charmbracelet/[email protected]/cursor/cursor.go:179 +0x184
github.com/charmbracelet/bubbletea.(*Program).
eventLoop.func1()
/home/runner/go/pkg/mod/github.com/charmbracelet/[email protected]/tea.go:
428 +0xd5

Previous write at 0x00c000366500 by main goroutine:
github.com/ubuntu/authd/pam/internal/adapter.(*UIModel).Update()
/home/runner/work/authd/authd/pam/internal/adapter/model.go:365 +0x4e06
github.com/charmbracelet/bubbletea.(*Program).eventLoop()
/home/runner/go/pkg/mod/github.com/charmbracelet/[email protected]/tea.go:461 +0x1349
github.com/charmbracelet/bubbletea.(*Program).Run()
/home/runner/go/pkg/mod/github.com/charmbracelet/[email protected]/tea.go:595 +0x1a3b
main.(*pamModule).handleAuthRequest()
/home/runner/work/authd/authd/pam/pam.go:338 +0x32e4
main.(*pamModule).Authenticate()
/home/runner/work/authd/authd/pam/pam.go:212 +0x4bb
main.mainFunc()

I assume the issue is unrelated to the changes on the PR, because it didn't touch any code of the PAM module

Cc @3v1n0

[3v1n0]

Yeah it was already handled in f176f2c (#593)