Replace ValidatePrototypeId uses with ProtoId or EntProtoId (#38814)

* The easy ones

* For certain values of easy

* Easy test

* Hair

* Fix sandbox violations

* Sort usings

Content.Client/Guidebook/Controls/GuideReagentReaction.xaml.cs

@@ -21,8 +21,7 @@ namespace Content.Client.Guidebook.Controls;
 [UsedImplicitly, GenerateTypedNameReferences]
 public sealed partial class GuideReagentReaction : BoxContainer, ISearchableControl
 {
-    [ValidatePrototypeId<MixingCategoryPrototype>]
-    private const string DefaultMixingCategory = "DummyMix";
+    private static readonly ProtoId<MixingCategoryPrototype> DefaultMixingCategory = "DummyMix";
 
     private readonly IPrototypeManager _protoMan;
 
@@ -55,7 +54,7 @@ public sealed partial class GuideReagentReaction : BoxContainer, ISearchableCont
         }
         else
         {
-            mixingCategories.Add(protoMan.Index<MixingCategoryPrototype>(DefaultMixingCategory));
+            mixingCategories.Add(protoMan.Index(DefaultMixingCategory));
         }
         SetMixingCategory(mixingCategories, prototype, sysMan);
     }