[test] Version-guard some emoji tests.
[test] Version-guard some emoji tests.

Gate some emoji tests on a new enough iOS version.

airspeedswift/swift,airspeedswift/swift,devincoughlin/swift,brentdax/swift,austinzheng/swift,harlanhaskins/swift,xedin/swift,allevato/swift,aschwaighofer/swift,apple/swift,austinzheng/swift,parkera/swift,JGiola/swift,apple/swift,harlanhaskins/swift,alblue/swift,jmgc/swift,brentdax/swift,ahoppen/swift,lorentey/swift,shahmishal/swift,atrick/swift,shajrawi/swift,aschwaighofer/swift,nathawes/swift,nathawes/swift,amraboelela/swift,roambotics/swift,airspeedswift/swift,amraboelela/swift,sschiau/swift,tkremenek/swift,alblue/swift,brentdax/swift,natecook1000/swift,danielmartin/swift,airspeedswift/swift,jmgc/swift,gribozavr/swift,shahmishal/swift,jckarter/swift,karwa/swift,danielmartin/swift,atrick/swift,CodaFi/swift,tkremenek/swift,amraboelela/swift,natecook1000/swift,CodaFi/swift,devincoughlin/swift,glessard/swift,jopamer/swift,gribozavr/swift,glessard/swift,karwa/swift,tkremenek/swift,devincoughlin/swift,brentdax/swift,shahmishal/swift,karwa/swift,shajrawi/swift,natecook1000/swift,tkremenek/swift,jmgc/swift,stephentyrone/swift,atrick/swift,benlangmuir/swift,airspeedswift/swift,aschwaighofer/swift,gribozavr/swift,benlangmuir/swift,sschiau/swift,lorentey/swift,roambotics/swift,apple/swift,gribozavr/swift,JGiola/swift,xwu/swift,practicalswift/swift,JGiola/swift,gribozavr/swift,jmgc/swift,jmgc/swift,allevato/swift,danielmartin/swift,ahoppen/swift,rudkx/swift,nathawes/swift,practicalswift/swift,practicalswift/swift,devincoughlin/swift,austinzheng/swift,shajrawi/swift,benlangmuir/swift,devincoughlin/swift,gregomni/swift,danielmartin/swift,jopamer/swift,rudkx/swift,alblue/swift,parkera/swift,shajrawi/swift,alblue/swift,shajrawi/swift,nathawes/swift,danielmartin/swift,karwa/swift,lorentey/swift,amraboelela/swift,xedin/swift,parkera/swift,hooman/swift,jckarter/swift,hooman/swift,jopamer/swift,danielmartin/swift,roambotics/swift,sschiau/swift,roambotics/swift,aschwaighofer/swift,sschiau/swift,stephentyrone/swift,sschiau/swift,ahoppen/swift,allevato/swift,karwa/swift,rudkx/swift,lorentey/swift,nathawes/swift,jckarter/swift,jckarter/swift,karwa/swift,JGiola/swift,shajrawi/swift,apple/swift,shahmishal/swift,shahmishal/swift,nathawes/swift,allevato/swift,austinzheng/swift,tkremenek/swift,natecook1000/swift,xwu/swift,benlangmuir/swift,hooman/swift,jmgc/swift,lorentey/swift,xwu/swift,parkera/swift,aschwaighofer/swift,devincoughlin/swift,parkera/swift,allevato/swift,natecook1000/swift,allevato/swift,CodaFi/swift,apple/swift,sschiau/swift,jopamer/swift,gribozavr/swift,practicalswift/swift,amraboelela/swift,glessard/swift,jopamer/swift,practicalswift/swift,glessard/swift,ahoppen/swift,devincoughlin/swift,jckarter/swift,nathawes/swift,gregomni/swift,austinzheng/swift,sschiau/swift,lorentey/swift,xedin/swift,rudkx/swift,benlangmuir/swift,JGiola/swift,parkera/swift,xedin/swift,harlanhaskins/swift,ahoppen/swift,rudkx/swift,atrick/swift,shahmishal/swift,roambotics/swift,alblue/swift,tkremenek/swift,jckarter/swift,austinzheng/swift,benlangmuir/swift,CodaFi/swift,airspeedswift/swift,lorentey/swift,ahoppen/swift,CodaFi/swift,xwu/swift,jmgc/swift,gregomni/swift,stephentyrone/swift,shajrawi/swift,hooman/swift,hooman/swift,hooman/swift,alblue/swift,harlanhaskins/swift,practicalswift/swift,xwu/swift,harlanhaskins/swift,hooman/swift,parkera/swift,JGiola/swift,austinzheng/swift,atrick/swift,xedin/swift,gregomni/swift,shahmishal/swift,airspeedswift/swift,aschwaighofer/swift,harlanhaskins/swift,natecook1000/swift,brentdax/swift,parkera/swift,tkremenek/swift,brentdax/swift,brentdax/swift,xwu/swift,jopamer/swift,roambotics/swift,xedin/swift,gregomni/swift,shahmishal/swift,stephentyrone/swift,practicalswift/swift,stephentyrone/swift,devincoughlin/swift,shajrawi/swift,amraboelela/swift,karwa/swift,practicalswift/swift,CodaFi/swift,xwu/swift,danielmartin/swift,xedin/swift,jopamer/swift,stephentyrone/swift,natecook1000/swift,lorentey/swift,gribozavr/swift,stephentyrone/swift,rudkx/swift,CodaFi/swift,allevato/swift,glessard/swift,aschwaighofer/swift,jckarter/swift,sschiau/swift,harlanhaskins/swift,alblue/swift,glessard/swift,karwa/swift,gregomni/swift,xedin/swift,amraboelela/swift,gribozavr/swift,apple/swift,atrick/swift