Fix round start crash (causing instant restart) (#26579)

* Fix round start crash

* Make `TryCreateObjective` more error tolerant

Content.Shared/Objectives/Systems/SharedObjectivesSystem.cs

@@ -1,6 +1,7 @@
 using Content.Shared.Mind;
 using Content.Shared.Objectives;
 using Content.Shared.Objectives.Components;
+using Robust.Shared.Prototypes;
 using Robust.Shared.Utility;
 
 namespace Content.Shared.Objectives.Systems;
@@ -11,6 +12,7 @@ namespace Content.Shared.Objectives.Systems;
 public abstract class SharedObjectivesSystem : EntitySystem
 {
     [Dependency] private readonly SharedMindSystem _mind = default!;
+    [Dependency] private readonly IPrototypeManager _protoMan = default!;
 
     private EntityQuery<MetaDataComponent> _metaQuery;
 
@@ -55,6 +57,9 @@ public abstract class SharedObjectivesSystem : EntitySystem
     /// </summary>
     public EntityUid? TryCreateObjective(EntityUid mindId, MindComponent mind, string proto)
     {
+        if (!_protoMan.HasIndex<EntityPrototype>(proto))
+            return null;
+
         var uid = Spawn(proto);
         if (!TryComp<ObjectiveComponent>(uid, out var comp))
         {

Resources/Prototypes/Objectives/objectiveGroups.yml

@@ -80,7 +80,6 @@
     TechnologyDiskStealCollectionObjective: 1        #rnd
     FigurineStealCollectionObjective: 0.3          #service
     IDCardsStealCollectionObjective: 1
-    CannabisStealCollectionObjective: 1
     LAMPStealCollectionObjective: 2 #only for moth
 
 - type: weightedRandom