fix(#9732): infinite loop on privacy policy page

[paulpascal]

Description

Fixes Navigation Issue with Back Buttons on Privacy Policy Page

This fix addresses the navigation issue observed on the Privacy Policy page where clicking the bottom back button first leads to an infinite loop between the top and bottom of the page. Specifically:

• When accessing the Privacy Policy from the login page, clicking the bottom back button first would scroll the page to the top.
• The top back button, when clicked after this, would return the user to the bottom, and vice versa, creating an endless loop.

Changes Made:

• Adjusted the event listeners to ensure that the back button consistently takes the user back to the login page, without causing an infinite loop between the top and bottom of the Privacy Policy page.
• The top back button now returns to the login page as expected when clicked, regardless of whether the bottom or top button is clicked first.

Related Issue: #9732

Code review checklist

• UI/UX backwards compatible: Test it works for the new design (enabled by default). And test it works in the old design, enable can_view_old_navigation permission to see the old design.
• Readable: Concise, well named, follows the style guide, documented if necessary.
• Documented: Configuration and user documentation on cht-docs
• Tested: Unit and/or e2e where appropriate
• Internationalised: All user facing text
• Backwards compatible: Works with existing data and configuration or includes a migration. Any breaking changes documented in the release notes.

License

The software is provided under AGPL-3.0. Contributions to this project are accepted under the same license.

[dianabarsan]

Very cool! Thanks for this :)
I think it would be super useful to add an e2e test for the login privacy policy, including the action of this back button. We have a bunch of e2e tests that cover privacy policies, but none target this page:

cht-core/tests/e2e/default/privacy-policy/privacy-policy.wdio-spec.js

Line 9 in 5157ee9

describe('Privacy policy', () => {

Additionally, it will be useful to test this code automatically in our minimum browser (since you're switching to arrow functions) - which will happen automatically if you add an e2e test in that file.

Thanks again! Nice work!

[paulpascal]

Thanks @dianabarsan for your feedback :) - I will make the right adjustments