add a `validate=False` option for `graph_objects` and `px` figures

There's already an issue outlining the effects graph_object validation has on plot generation time. Users can bypass this performance hit by replacing the graph_objects with dict and then display the plot with plotly.offline.iplot(fig, validate=False) or if they are creating graphs in Dash, they can forgo the plotly.py library altogether and just use a dict in their Graph component's figure argument.

This solution can greatly improve the performance of Dash apps but it means that Dash users with expensive graphs have to choose between using px/plotly.py's update methods and optimally fast code.

I wonder if a way to turn off validation, especially in Dash apps, would help Dash users get the best of both worlds.

cc @matthewchan15

Examinez l’issue #1052 et les chemins existants de génération de figures de graph_objects et px, puis suivez la manière dont la validation est appliquée avant offline.iplot et les consommateurs de figures associés. Définissez le fonctionnement attendu d’une option validate=False pour ces APIs, y compris le cas d’utilisation de Dash, et vérifiez que la désactivation de la validation améliore le chemin ciblé sans modifier le comportement normal avec validation.