Code continually switches over to Javascript only when students use GitHub with MakeCode Arcade

[MsKTeachesCode]

Periodically, MakeCode Arcade will change a single line of code in pxt.json from

"preferredEditor": "blocksprj"

to

"preferredEditor": "tsprj"

When this happens, the entire program refuses to work in block code again, and will only exist in JavaScript. The thing is, this doesn't always do that when you're making a pull request, and will sometimes happen when students are simply working on a branch of their own and just committing changes.

Sometimes, it changes all by itself.

To reproduce the error, simply make a pull request and get an error. The error won't show up, of course. Because that's the error.