Light Switch doesn't affect most of my environment when running under admin account

### Microsoft PowerToys version

0.97.2

### Installation method

PowerToys auto-update

### Area(s) with issue?

Light Switch

### Steps to reproduce

1) Launch PowerToys as administrator using the admin credentials my employer provides that are separate from my standard domain credentials.
2) Toggle the light switch

### ✔️ Expected Behavior

The rest of my environment running under my standard domain account should change themes.

### ❌ Actual Behavior

Only the apps running with admin elevation change theme

### Upload Bug Report ZIP-file

_No response_

### Additional Information

Windows 11 using company domain credentials for login. These credentials do not have local admin rights, but I am provided separate credentials that do have local admin rights. I use these credentials to run PowerToys in administrator mode.

I need admin elevation for Fancy Zones to manage the apps I run with elevation.

### Other Software

_No response_

Start with the Light Switch entry point and reproduce the behavior when PowerToys runs with separate administrator credentials from the standard domain account. Compare theme changes in elevated and non-elevated applications, including the interaction with Fancy Zones. Done means toggling Light Switch updates the rest of the user's environment without breaking elevated-app support.

Written by the indexing model from the issue text.