UFE Outliner does not reflect the load state of Maya reference.

**Describe the bug**
The Outliner does not update with Maya changes.

**Steps to reproduce**
Steps to reproduce the behavior:
1. Create a usd stage.
2. load a maya reference prim.
3. unload.
4. observe the UFE outliner representation under the USDProxyshape still represents a loaded state.

See attachment.

**Expected behavior**
References in UFE are in sync with the state of Maya.

**Attachments**


**Specs (if applicable):**
- Windows 10
- Release
- Maya 2024

**Additional context**
The crossed out MayaReference1 in the usdEditAsMaya set cannot be interacted with:
On "Cancel Editing as Maya Data" yields this error: // Error: Failed verification: ' pullParent.isValid() '