ACTIVATE_KEYBOARD_LAYOUT_FLAGS enum does not have a [Flags] attribute

Actual behavior

[A clear and concise description of what the bug is.]
UI.Input.KeyboardAndMouse.ACTIVATE_KEYBOARD_LAYOUT_FLAGS enum does not have a [Flags] attribute

Expected behavior

A clear and concise description of what you expected to happen.
ACTIVATE_KEYBOARD_LAYOUT_FLAGS enum must have a [Flags] attribute

Repro steps

1. NativeMethods.txt content:

CoInitializeEx
CoCreateInstance
CoUninitialize
LoadKeyboardLayout
GetKeyboardLayout
GetForegroundWindow
GetWindowThreadProcessId
ActivateKeyboardLayout
PostMessage
WM_INPUTLANGCHANGEREQUEST
CLSCTX_INPROC_SERVER
KLF_ACTIVATE
KLF_SETFORPROCESS
IID_ITfInputProcessorProfiles

2. NativeMethods.json content (if present):

{
    "$schema": "https://aka.ms/CsWin32.schema.json",
    "emitSingleFile": false,
    "className": "WinApi",
    "allowMarshaling": false,
    "useSafeHandles": true,
    "friendlyOverloads": {
        "enabled": true
    }
}

3. Any of your own code that should be shared?

Context

• CsWin32 version: 0.3.269
• Target Framework: net10-windows

Start by reproducing the issue with the listed NativeMethods.txt and NativeMethods.json inputs under net10-windows, then inspect the generated UI.Input.KeyboardAndMouse.ACTIVATE_KEYBOARD_LAYOUT_FLAGS enum. Done means the generated enum includes the expected [Flags] attribute for this input while preserving the existing generated API behavior.