[BUG] `org-delete-char` and `org-delete-backward-char` don't respect `delete-active-region`

[Okamsn]

Hello,

I use Meow, which combines movement and making selections, and have 
`delete-active-region` set to `nil`.  Because Meow creates regions 
frequently, it recommends not having the deletion commands delete the 
active region.

This works when `delete` is bound to `forward-delete-char` and 
`backspace` is bound to `backward-delete-char-untabify`, because both 
commands respect `delete-active-region`.

This does not work with `org-delete-backward-char` or `org-delete-char`, 
because those commands use `delete-char`, which does not respect 
`delete-active-region`.

This is in Org version 9.6.6.

Thank you.