Validate ShaderPrototype IDs (#38728)

* Convert all shader prototype string literals to protoids in overlays

* Convert more shader prototype literal strings to protoids

* Convert ValidatePrototypeId to ProtoId

* Later

Content.Client/SurveillanceCamera/UI/SurveillanceCameraMonitorWindow.xaml.cs

@@ -17,6 +17,8 @@ namespace Content.Client.SurveillanceCamera.UI;
 [GenerateTypedNameReferences]
 public sealed partial class SurveillanceCameraMonitorWindow : DefaultWindow
 {
+    private static readonly ProtoId<ShaderPrototype> CameraStaticShader = "CameraStatic";
+
     [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
     [Dependency] private readonly IResourceCache _resourceCache = default!;
 
@@ -53,7 +55,7 @@ public sealed partial class SurveillanceCameraMonitorWindow : DefaultWindow
 
         // This could be done better. I don't want to deal with stylesheets at the moment.
         var texture = _resourceCache.GetTexture("/Textures/Interface/Nano/square_black.png");
-        var shader = _prototypeManager.Index<ShaderPrototype>("CameraStatic").Instance().Duplicate();
+        var shader = _prototypeManager.Index(CameraStaticShader).Instance().Duplicate();
 
         CameraView.ViewportSize = new Vector2i(500, 500);
         CameraView.Eye = _defaultEye; // sure