Using the Clip Rect property of the text component crashes the AFrame loader.

[Exairnous]

Description
If you have a text component in a scene with the Clip Rect property filled out it crashes the AFrame loader on scene load.

To Reproduce
Steps to reproduce the behavior:

1. Open a Hubs room using the AFrame loader and the debugLocalScene query string parameter.
2. Drag and drop this GLB file: ClipRectBug.zip
3. See that the scene fails to load/crashes and this error is printed to the browser console:

Uncaught (in promise) TypeError: e.split is not a function
    parse troika-text.js:42
    Aframe 10
        d
        parseProperties
        buildData
        initComponent
        updateProperties
        Component
        n
        value
        value
        value
    gc gltf-model-plus.js:78
    e gltf-model-plus.js:283
    uc hub-2b597d191271c31b14c2.js:1
    s hub-2b597d191271c31b14c2.js:1

Expected behavior
The scene should load without crashing.

Hardware

• Device: Laptop
• OS: Linux
• Browser: Firefox

Additional context
I stumbled across this bug while working on supporting the Clip Rect property in the Blender add-on, but I was able to reproduce this with a Spoke scene as well.