pn.widgets.DatetimeRangeInput doesn't accept format parameter

[Adam-D-Lewis]

ALL software version info

Name Version Build Channel
bokeh 2.2.3 py39hf3d152e_0 conda-forge
panel 0.10.2 pyhd8ed1ab_0 conda-forge
python 3.9.1 hffdb5ce_1_cpython conda-forge

Description of expected behavior and the observed behavior

According to the docs Datetimerangeinput should accept a format parameter, but it doesn't seem to do anything in practice.

Complete, minimal, self-contained example code that reproduces the issue

import panel as pn
import datetime as dt
pn.extension()

datetime_range_slider = pn.widgets.DatetimeRangeInput(
    format='%Y-%m-%d %H:%m:%S %Z',
    name='Datetime Range Input',
    value=(dt.datetime.now(), dt.datetime.now()),
    width=300
)

Stack traceback and/or browser JavaScript console output

WARNING:param.DatetimeRangeInput00010: Setting non-parameter attribute format=%Y-%m-%d %H:%m:%S %Z using a mechanism intended only for parameters

Screenshots or screencasts of the bug in action