This is a mess.
An Internet search for 'printing Arabic gets Chinese ' returns lots of hits outside of AI2.
Most of them are unsuccessful, or have to resort to hacks like generating a bmp image and feeding its bytes to the printer after the code to switch to bmp mode.
Can AI2 print Arabic on a canvas?
Can that Canvas be exported as an image and converted to bmp format then be read back as bytes?
Probably need a JavaScript stunt for that.
Throw in the right to left print direction of Arabic cursive text.
Print extensions just gloss over code conversions.
Lots of luck asking the extension author for support.