Maitland Ward Says Miley Cyrus Needs To Push Back on Brother Trace's OnlyFans Diss

Maitland Ward is slamming Trace Cyrus for taking swipes at OnlyFans models ... and she's calling on Miley Cyrus to set her brother straight. We got the former "Boy Meets World" actress-turned-porn star in Los Angeles and our photog asked her about…