'right alt' and 'left alt' parsable hotkeys behaves the same as the 'alt' parsable hotkey on Windows

[FredKhayat]

while True:
        keyboard.add_hotkey('right alt', lambda: print("Right Alt pressed"))
        keyboard.wait()

When running the above code snippet, the callback function is executed regardless of which alt (right or left) was pressed.
The expected behavior is to execute the callback function only when the right alt is pressed, and to ignore left alt key presses.

Similar to issue #617