Regression: Codemirror syntax highlight broken in 2.0+

[JeppeKlitgaard]

Description

After updating to 2.0+ (2.5 specifically), I have noticed that the codemirror syntax highlighting has stopped working. I thought it was something wrong on my end, but it appears to also be broken on the official nicegui documentation: NiceGUI docs.

[falkoschindler]

Hi @JeppeKlitgaard,

It seems like some themes don't include syntax highlighting, like the default "basicLight". But it works for others like this:

ui.codemirror('print(42)', language='Python', theme='vscodeLight')