Alignment in stylesheets can no longer be defined with text, only with integers

In PySide2 we could use "qproperty-alignment: AlignRight;", but this no longer works in PySide6. 

Here is the minimal reproducible example:

from PySide6 import QtWidgets

app = QtWidgets.QApplication([])
window = QtWidgets.QLabel('Window from label')
window.setStyleSheet('qproperty-alignment: AlignRight;')
window.setFixedWidth(1000)
window.show()
app.exec()

Since AlignRight is equal to 2, we can replace AligntRight with 2 in the above example and alignment will work.