Many @classmethod in templates that don't use cls

[hhoeflin]

Hi,

in your templates in
https://github.com/plotly/dash-labs/blob/main/dash_labs/templates/base.py
you have many classmethods that don't use "cls" at all. I suggest that you turn them into staticmethods or make them pure functions.

[jonmmease]

Hi @hhoeflin, thanks for taking a look.

The reason I ended up making them class methods was so that template subclasses can selectively override the component constructor methods. If I recall correctly, this isn't possible with static methods.