DataRequired and NumberRange can't handle 0

[Mick Kirkegaard]

0 (zero) value not allowed for DecimalField with NumberRange validator for DataRequired

latitude = DecimalField(
    validators=[DataRequired(), NumberRange(min=-90, max=90)],
    render_kw={
        "placeholder": "Latitude, e.g. 55.9397°",
        "title": "Latitude",
    },
    places=6,
)

The problem seems to be the DataRequired that checks "if field.data" which I assume should be if field.data is not None

Could use InputRequired instead, but for some users, this field is ReadOnly in my application, which means that InputRequired is not validated correctly either.

0 is between -90 and 90

Environment:

• Python version: 3.10.9
• Flask-WTF version:1.2.1
• Flask version:2.3.3