[sourcekit] Re-enable DiagsAfterCloseAndReopen test
[sourcekit] Re-enable DiagsAfterCloseAndReopen test

After fixing the lock inversion from the previous commit, this test
appears to be clean under TSan on Linux and macOS, so re-enable it and
hope for the best.

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