Pass tuple to get_group to fix warning

[LiamConnors]

#4500

Code PR

• I have read through the contributing notes and understand the structure of the package. In particular, if my PR modifies code of plotly.graph_objects, my modifications concern the codegen files and not generated files.
• I have added tests (if submitting a new feature or correcting a bug) or
  modified existing tests.
• For a new feature, I have added documentation examples in an existing or
  new tutorial notebook (please see the doc checklist as well).
• I have added a CHANGELOG entry if fixing/changing/adding anything substantial.
• For a new feature or a change in behaviour, I have updated the relevant docstrings in the code to describe the feature or behaviour (please see the doc checklist as well).

[alexcjohnson]

@LiamConnors this looks great! Can we add a test, perhaps in test_px_input.py but similar to this one in test_px_wide.py? And I guess increase the pandas version in requirements_39_pandas_2_optional.txt to 2.2?

plotly.py/packages/python/plotly/plotly/tests/test_optional/test_px/test_px_wide.py

Lines 865 to 877 in 9154a67

	with warnings.catch_warnings(record=True) as warn_list:
	_ = px.bar(
	df,
	x=df.index,
	y=df.columns[:-2],
	labels=df.columns[:-2],
	)
	performance_warnings = [
	warn
	for warn in warn_list
	if issubclass(warn.category, pd.errors.PerformanceWarning)
	]
	assert len(performance_warnings) == 0, "PerformanceWarning(s) raised!"

[LiamConnors]

Thanks! @alexcjohnson! I've added a test now

[alexcjohnson]

💃 Beautiful! Just wants a changelog entry.