Incorrect return type on `matplotlib.pyplot.subplot_mosaic`

[blakeNaccarato]

The return type is dict[Text, Axes]. Since this is the functional API, it returns a tuple of figure and axes dictionary, so it should be tuple[Figure, dict[Text, Axes]]. I can submit a PR on this, if you'd like. It's alright to use Figure as the return type, or should I annotate it with some other abstract superclass?

As it is now:

python-type-stubs/matplotlib/pyplot.pyi

Lines 223 to 232 in 917dffc

	def subplot_mosaic(
	mosaic: list | str,
	*,
	sharex: bool = ...,
	sharey: bool = ...,
	subplot_kw: dict = ...,
	gridspec_kw: dict = ...,
	empty_sentinel: object = ...,
	**fig_kw
	) -> dict[Text, Axes]: ...

With correction:

def subplot_mosaic(
    ...
) -> tuple[Figure, dict[Text, Axes]]: ...