UI: Fix remigrating scene collections from absolute to relative

[derrod]

Description

Fixes resetting scene collection base resolution to work again.

Motivation and Context

This was broken in #11055

How Has This Been Tested?

Locally.

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• My code has been run through clang-format.
• I have read the contributing document.
• My code is not on the master branch.
• The code has been tested.
• All commit messages are properly formatted and commits squashed where appropriate.
• I have included updates to all appropriate documentation.

[Lain-B]

If we want to put this on a hotfix, we can merge this directly to a release branch if needed and not master, and then redo this for master after the UI changes are merged.

[Warchamp7]

If we want to put this on a hotfix, we can merge this directly to a release branch if needed and not master, and then redo this for master after the UI changes are merged.

We should try to get this out in a hotfix for sure