[4.x]: Codeception Acceptance testing - Javascript must be enabled to access control panel

What happened?

I've been trying to get Acceptance testing working with Codeception v5.1.2.

I followed the setup guide:
https://craftcms.com/docs/4.x/testing/testing-craft/setup.html

Then got past various issues:

 - Output path is not defined by key "paths: output"
     - # Added "paths: output: tests/_output" in Codeception.yml
 - PHP Fatal error:  Uncaught Error: Class "Codeception\Module\Yii2" not found
     - # composer require codeception/module-yii2 --dev
 - Suite 'unit' could not be found
     - # Unit should be capitalised 
 - No primary site exists
     - # Set dbSetup:clean and dbSetup:setupCraft to false in Codeception.yml and use a copy of the production db

But I'm stuck now on a basic Acceptance test for the control panel login page.

In my test class, I have:

public function loginpageWorks(AcceptanceTester $I)
    {
        $I->amOnPage('/admin/login');
        $I->see('Forgot your password?');
    }

And output says "JavaScript must be enabled to access the Craft CMS control panel":

1) FirstCest: Loginpage works
 Test  tests/Acceptance/FirstCest.php:loginpageWorks
 Step  See "Forgot your password?"
 Fail  Failed asserting that on page /admin/login
-->  Sign In - MyCraftCMS body:not(.userlevel-admin) #nav-assets { display: none !important; } #nav-dashboard {display: none !important;} JavaScript must be enabled to access the Craft CMS control panel.
--> contains "Forgot your password?".

How can I get JS to run?

Craft CMS version

4.10.7

PHP version

8.1.29

Operating system and version

Linux 5.15.133.1-microsoft-standard-WSL2

Database type and version

MySQL 8.0.36

Image driver and version

No response

Installed plugins and versions

No response