Lint more const string prototypes (#18922)

Content.Server/Electrocution/ElectrocutionSystem.cs

@@ -52,7 +52,10 @@ public sealed class ElectrocutionSystem : SharedElectrocutionSystem
     [Dependency] private readonly SharedStutteringSystem _stuttering = default!;
     [Dependency] private readonly TagSystem _tag = default!;
 
+    [ValidatePrototypeId<StatusEffectPrototype>]
     private const string StatusEffectKey = "Electrocution";
+
+    [ValidatePrototypeId<DamageTypePrototype>]
     private const string DamageType = "Shock";
 
     // Yes, this is absurdly small for a reason.