Sema: Skip 'non-member observing property' check for invalid properties
Sema: Skip 'non-member observing property' check for invalid properties

This avoids emitting a diagnostic twice with a subsequent change.

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