Refactor serialization copying to use source generators (#19412)

Content.Client/Effects/EffectVisualsComponent.cs

@@ -4,4 +4,4 @@ namespace Content.Client.Effects;
 /// Deletes the attached entity whenever any animation completes. Used for temporary client-side entities.
 /// </summary>
 [RegisterComponent]
-public sealed class EffectVisualsComponent : Component {}
+public sealed partial class EffectVisualsComponent : Component {}