Cris Cyborg Says She's Rooting For Ronda Rousey At WrestleMania

[[tmz:video id="1_31cwyz7l"]] Betcha didn't see this coming ... Cris Cyborg -- who had a heated rivalry with Ronda Rousey -- says she's PUMPED to watch Ronda. TMZ Sports saw Cris at LAX on Friday ... and asked her if she planned on watching her former…