Update ConfigLStar_PbPb2018.C
Update ConfigLStar_PbPb2018.C

I have modified the loop for enabling MC invariant mass in single and mixed events on line 120.
nschmidtALICE/AliPhysics,AMechler/AliPhysics,victor-gonzalez/AliPhysics,alisw/AliPhysics,alisw/AliPhysics,AMechler/AliPhysics,alisw/AliPhysics,pchrista/AliPhysics,nschmidtALICE/AliPhysics,nschmidtALICE/AliPhysics,victor-gonzalez/AliPhysics,AMechler/AliPhysics,pchrista/AliPhysics,rbailhac/AliPhysics,mpuccio/AliPhysics,nschmidtALICE/AliPhysics,rbailhac/AliPhysics,alisw/AliPhysics,rbailhac/AliPhysics,adriansev/AliPhysics,pchrista/AliPhysics,pchrista/AliPhysics,victor-gonzalez/AliPhysics,AMechler/AliPhysics,adriansev/AliPhysics,adriansev/AliPhysics,mpuccio/AliPhysics,pchrista/AliPhysics,pchrista/AliPhysics,AMechler/AliPhysics,victor-gonzalez/AliPhysics,mpuccio/AliPhysics,rbailhac/AliPhysics,adriansev/AliPhysics,mpuccio/AliPhysics,mpuccio/AliPhysics,AMechler/AliPhysics,victor-gonzalez/AliPhysics,mpuccio/AliPhysics,alisw/AliPhysics,adriansev/AliPhysics,nschmidtALICE/AliPhysics,victor-gonzalez/AliPhysics,AMechler/AliPhysics,nschmidtALICE/AliPhysics,adriansev/AliPhysics,nschmidtALICE/AliPhysics,victor-gonzalez/AliPhysics,alisw/AliPhysics,rbailhac/AliPhysics,rbailhac/AliPhysics,adriansev/AliPhysics,alisw/AliPhysics,mpuccio/AliPhysics,rbailhac/AliPhysics,pchrista/AliPhysics