[sync] Plugin generates an incorrect theme object shape that's not compatible with createTheme(...)

[SaavanFreed]

Steps to reproduce

Steps:

1. Download SampleTheme.json
2. Run createTheme(sampleThemeJson); in a basic project
3. Verify the theme is not actually being applied

Current behavior

It uses the default theme object instead of the one generated by the plugin.

Expected behavior

1. It should use the theme object I'm supplying or at the very least throw an error if it's not going to use it.
2. The shape of the object generated by the plugin should match the TypeScript type for the MUI Theme object.

Context

I want to create a theme, export it using the Sync Plugin, and import it into my MUI app.

Your environment

Software	Version
Design file version	v5.?.?
Design tool	Figma/Adobe XD/Sketch
etc.

Search keywords: MUI Sync Plugin, Design Kit