[Typing] `px.timeline.color_continuous_scale` accepts also `list[tuple[float,str]]`, not only `list[str]`

https://plotly.com/python-api-reference/generated/plotly.express.timeline.html

color_continuous_scale (list of str) – Strings should define valid CSS-colors This list is used to build a continuous color scale when the column denoted by color contains numeric data. Various useful color scales are available in the plotly.express.colors submodules, specifically plotly.express.colors.sequential, plotly.express.colors.diverging and plotly.express.colors.cyclical.

However, here the example shows:

https://github.com/plotly/plotly.py/blob/182fff29bce98c30ab516242d4e01d2d2d0bee0f/doc/python/colorscales.md#explicitly-constructing-a-color-scale