Welcome to the forum.
Would the keyboard module really need to have no arrow keys, though? You could just pair the normal keyboard with a numpad-sized module that has full sized arrow keys.
Also, you know that the normal numpads have arrow keys and pg up, pg down, right? When numlock is off, that’s how the keys function. And on the Framework-16 you’ll be able to remap any keys however you wish. You can make any keys you prefer function as arrow keys. The modules run QMK firmware which offers a ridiculous level of configuration. It’s great. I put QMK on my 15 button mouse even.
Since the numpad already offers those keys, I would guess no.