Quiz - Deleting an unsaved section brings the user to a collapsed previous section

[pcenov]

Observed behavior

Observed while testing #12312 - Deleting an unsaved section brings the user to a collapsed previous section which is confusing. There's a TypeError: Cannot read properties of undefined (reading 'questions') in the console.

Video:

Deleting.an.unsaved.section.mp4

Expected behavior

All the questions of the previous section should be visible.

Steps to reproduce the issue

1. Install the build from First pass string updates following UX writing and ditto review #12312
2. Observe the steps in the provided video.

Usage Details

Windows 11, Ubuntu 22 - Chrome

[pcenov]

@radinamatic

[rtibbles]

Seems like we need to make sure to navigate to the previous section when this happens - I thought I had added logic for this, but perhaps it's not being properly triggered.