add secret weight prototype cvar (#23564)

Add cvar

Content.Server/GameTicking/Rules/SecretRuleSystem.cs

@@ -2,8 +2,10 @@ using Content.Server.GameTicking.Presets;
 using Content.Server.GameTicking.Rules.Components;
 using Content.Shared.Random;
 using Content.Shared.Random.Helpers;
+using Content.Shared.CCVar;
 using Robust.Shared.Prototypes;
 using Robust.Shared.Random;
+using Robust.Shared.Configuration;
 
 namespace Content.Server.GameTicking.Rules;
 
@@ -11,6 +13,7 @@ public sealed class SecretRuleSystem : GameRuleSystem<SecretRuleComponent>
 {
     [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
     [Dependency] private readonly IRobustRandom _random = default!;
+    [Dependency] private readonly IConfigurationManager _configurationManager = default!;
 
     protected override void Started(EntityUid uid, SecretRuleComponent component, GameRuleComponent gameRule, GameRuleStartedEvent args)
     {
@@ -32,7 +35,8 @@ public sealed class SecretRuleSystem : GameRuleSystem<SecretRuleComponent>
     {
         // TODO: This doesn't consider what can't start due to minimum player count,
         // but currently there's no way to know anyway as they use cvars.
-        var preset = _prototypeManager.Index<WeightedRandomPrototype>("Secret").Pick(_random);
+        var presetString = _configurationManager.GetCVar(CCVars.SecretWeightPrototype);
+        var preset = _prototypeManager.Index<WeightedRandomPrototype>(presetString).Pick(_random);
         Logger.InfoS("gamepreset", $"Selected {preset} for secret.");
 
         var rules = _prototypeManager.Index<GamePresetPrototype>(preset).Rules;