Clarify IReflect interface COM casting behavior

Updated remarks to clarify COM object casting behavior in .NET versions.

Author: AaronRobinsonMSFT

xml/System.Reflection/IReflect.xml

@@ -55,8 +55,12 @@
       <format type="text/markdown"><![CDATA[
 
 ## Remarks
- The <xref:System.Reflection.IReflect> interface is used to interoperate with the [IDispatch interface](/windows/win32/api/oaidl/nn-oaidl-idispatch). <xref:System.Reflection.IReflect> defines a subset of the <xref:System.Type> reflection methods. Implementing this interface enables a type to customize its behavior when the object is being accessed from COM as an `IDispatch` object. The <xref:System.Runtime.InteropServices.CustomMarshalers.ExpandoToDispatchExMarshaler> class can be used to marshal an object that implements <xref:System.Reflection.IReflect> or <xref:System.Runtime.InteropServices.Expando.IExpando> as a COM `IDispatch` object, and vice versa.
+ Since .NET 10, no COM object can be successfully cast to this interface. It is recommended to project and define a managed definition of `IDispatch` or `IDispatchEx` if access is needed.
 
+ From .NET 5 until .NET 9, COM objects that implement `IDispatchEx` can be cast to this interface, but all methods will throw an exception.
+
+ On .NET Framework, the <xref:System.Reflection.IReflect> interface is used to interoperate with the [IDispatch interface](/windows/win32/api/oaidl/nn-oaidl-idispatch). <xref:System.Reflection.IReflect> defines a subset of the <xref:System.Type> reflection methods. Implementing this interface enables a type to customize its behavior when the object is being accessed from COM as an `IDispatch` object. The <xref:System.Runtime.InteropServices.CustomMarshalers.ExpandoToDispatchExMarshaler> class can be used to marshal an object that implements <xref:System.Reflection.IReflect> or <xref:System.Runtime.InteropServices.Expando.IExpando> as a COM `IDispatch` object, and vice versa.
+        
  ]]></format>
     </remarks>
     <altmember cref="T:System.Runtime.InteropServices.CustomMarshalers.ExpandoToDispatchExMarshaler" />