Fixes dormant diseases showing up in Medical scanners (#17834)

* Update _MobProcs.dm

* .

code/datums/diseases/_MobProcs.dm

@@ -23,6 +23,11 @@
 		return FALSE
 	return TRUE
 
+/mob/proc/isInfective()
+	if(isemptylist(GetSpreadableViruses()))
+		return FALSE
+	return TRUE
+
 /mob/proc/CanContractDisease(datum/disease/D)
 	if(stat == DEAD && !global_flag_check(D.virus_modifiers, SPREAD_DEAD))
 		return FALSE

code/game/machinery/adv_med.dm

@@ -196,7 +196,7 @@
 		occupantData["health"] = H.health
 		occupantData["maxHealth"] = H.getMaxHealth()
 
-		occupantData["hasVirus"] = H.IsInfected()
+		occupantData["hasVirus"] = H.isInfective()
 
 		occupantData["bruteLoss"] = H.getBruteLoss()
 		occupantData["oxyLoss"] = H.getOxyLoss()