Fixed removes necessary generic to set state on IOperation (#8519)

Author: PascalSenn

src/HotChocolate/Core/src/Execution/Processing/Operation.cs

@@ -155,7 +155,7 @@ public TState GetOrAddState<TState, TContext>(Func<TContext, TState> createState
         return (TState)state!;
     }
 
-    public TState GetOrAddState<TState, TContext>(
+    public TState GetOrAddState<TState>(
         string key,
         Func<string, TState> createState)
         => GetOrAddState<TState, object?>(key, (k, _) => createState(k), null);

src/HotChocolate/Core/src/Types/Execution/Processing/IOperation.cs

@@ -153,9 +153,6 @@ TState GetOrAddState<TState, TContext>(
     /// <typeparam name="TState">
     /// The type of the state.
     /// </typeparam>
-    /// <typeparam name="TContext">
-    /// The type of the context.
-    /// </typeparam>
     /// <param name="key">
     /// The key of the state.
     /// </param>
@@ -165,7 +162,7 @@ TState GetOrAddState<TState, TContext>(
     /// <returns>
     /// Returns the state.
     /// </returns>
-    TState GetOrAddState<TState, TContext>(
+    TState GetOrAddState<TState>(
         string key,
         Func<string, TState> createState);