Add RequiresAssemblyFiles onto Marshal.GetHINSTANCE. (#71531)

* Add `RequiresAssemblyFiles` onto `Marshal.GetHINSTANCE`.

The `GetHINSTANCE` only works on modules/assemblies which are loaded from a file on disk (must be loaded via `LoadLibrary` really), in single-file like scenarios lot of assemblies are loaded directly from memory. For such assemblies the API returns -1 which is not a valid handle.

* Add the attribute to ref assembly

* Add it on the non-implemented version

src/coreclr/System.Private.CoreLib/src/System/Runtime/InteropServices/Marshal.CoreCLR.cs

@@ -268,6 +268,8 @@ internal static unsafe bool IsPinnable(object? obj)
         /// Returns the HInstance for this module.  Returns -1 if the module doesn't have
         /// an HInstance.  In Memory (Dynamic) Modules won't have an HInstance.
         /// </summary>
+        [RequiresAssemblyFiles("Windows only assigns HINSTANCE to assemblies loaded from disk. " +
+            "This API will return -1 for modules without a file on disk.")]
         public static IntPtr GetHINSTANCE(Module m)
         {
             ArgumentNullException.ThrowIfNull(m);

src/libraries/System.Private.CoreLib/src/System/Runtime/InteropServices/Marshal.cs

@@ -625,6 +625,8 @@ public static void PtrToStructure<T>(IntPtr ptr, [DisallowNull] T structure)
 
         // CoreCLR has a different implementation for Windows only
 #if !CORECLR || !TARGET_WINDOWS
+        [RequiresAssemblyFiles("Windows only assigns HINSTANCE to assemblies loaded from disk. " +
+            "This API will return -1 for modules without a file on disk.")]
         public static IntPtr GetHINSTANCE(Module m)
         {
             ArgumentNullException.ThrowIfNull(m);

src/libraries/System.Runtime.InteropServices/ref/System.Runtime.InteropServices.cs

@@ -576,6 +576,7 @@ public static void FreeHGlobal(System.IntPtr hglobal) { }
         [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
         public static System.IntPtr GetFunctionPointerForDelegate(System.Delegate d) { throw null; }
         public static System.IntPtr GetFunctionPointerForDelegate<TDelegate>(TDelegate d) where TDelegate : notnull { throw null; }
+        [System.Diagnostics.CodeAnalysis.RequiresAssemblyFiles("Windows only assigns HINSTANCE to assemblies loaded from disk. This API will return -1 for modules without a file on disk.")]
         public static System.IntPtr GetHINSTANCE(System.Reflection.Module m) { throw null; }
         public static int GetHRForException(System.Exception? e) { throw null; }
         public static int GetHRForLastWin32Error() { throw null; }