Convert does not convert files built with pyside2-uic 5.15.2

[stevenjking]

Files built using pyside2-uic 5.15.2 are not handled by qt.py --convert as the PySide2 imports are in the format from Pyside2.QtCore import * rather than the supported from Pyside2 import QtCore

## Created by: Qt User Interface Compiler version 5.15.2
##
## WARNING! All changes made in this file will be lost when recompiling UI file!
################################################################################

from PySide2.QtCore import *
from PySide2.QtGui import *
from PySide2.QtWidgets import *