About [[Wikimedia:Wikipedia-android-strings-wp stylized/ar]]
I still don't understand this question... how would we know? :) Do you mean the wordmark? If the logo, where is it set?
Yes, you can use the Arabic logo/wordmark for Wikipedia here. (Like it was done for the English version you can add some basic HTML tags to make the first and last character bigger, but that probably doesn't pertain to the Arabic wordmark.)