Closes #7020

Why is this the best possible solution? Were any other approaches considered?

It seems that during some recent refactoring, we accidentally removed the logic that sets focus after highlighting a question with an error. I’ve fixed that, and also took the opportunity to make some improvements: we can now eliminate some postDelayed calls that were previously needed to ensure smooth scrolling to specific questions, which wasn’t working perfectly before so:

• it’s more reliable than using a fixed 0.4 s delay to wait for animations to finish
• it can be a little bit faster
• it works in a smarter way as it immediately sets focus on the expected question, instead of first focusing the first one and then switching (as before)

How does this change affect users? Describe intentional changes to behavior and behavior that could have accidentally been affected by code changes. In other words, what are the regression risks?

Here, we need to test form validation, especially cases that require scrolling to a specific question to highlight it (please also test success validations to see if the snackbar is displayed correctly). Another important case is answering select one from map questions, to ensure that scrolling to those questions works correctly, see: #7028.

Do we need any specific form for testing your changes? If so, please attach one.

The form is linked in the issue.

Does this change require updates to documentation? If so, please file an issue here and include the link below.

No.

Before submitting this PR, please make sure you have:

• added or modified tests for any new or changed behavior
• run ./gradlew connectedAndroidTest (or ./gradlew testLab) and confirmed all checks still pass
• added a comment above any new strings describing it for translators
• added any new strings with date formatting to DateFormatsTest
• verified that any code or assets from external sources are properly credited in comments and/or in the about file.
• verified that any new UI elements use theme colors. UI Components Style guidelines