Grouped CollectionView enumeration (backport #18554)

[mergify]

GitHub Issue (If applicable): closes #

PR Type

What kind of change does this PR introduce?

• Bugfix

What is the current behavior?

Grouped collection view does not enumerate correctly in some scenarios

What is the new behavior?

Enumeration works

PR Checklist

Please check if your PR fulfills the following requirements:

• Docs have been added/updated which fit documentation template (for bug fixes / features)
• Unit Tests and/or UI Tests for the changes have been added (for bug fixes / features) (if applicable)
• Validated PR Screenshots Compare Test Run results.
• Contains NO breaking changes
• Associated with an issue (GitHub or internal) and uses the automatic close keywords.
• Commits must be following the Conventional Commits specification.

Other information

Internal Issue (If applicable):

---

This is an automatic backport of pull request #18554 done by [Mergify](https://mergify.com).

[unodevops]

🤖 Your Docs stage site is ready! Visit it here: https://unodocsprstaging.z13.web.core.windows.net/pr-18565/index.html

[unodevops]

🤖 Your WebAssembly Sample App stage site is ready! Visit it here: https://unowasmprstaging.z20.web.core.windows.net/pr-18565/index.html

[nventive-devops]

The build 144728 did not find any UI Test snapshots differences.