Bug summary

As of #20426 calling Figure.set_tight_layout(False) does not disable the tight layout algorithm.

Code for reproduction

from matplotlib import pyplot as plt

fig, ax = plt.subplots()
fig.set_tight_layout(True)
fig.set_tight_layout(False)
assert not fig.get_tight_layout()

Actual outcome

AssertionError

Expected outcome

clean exit

Additional information

I'm pretty sure this branch just needs to set self.set_layout_engine(None) in the falsey case. Attn: @jklymak

Operating system

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Matplotlib Version

main

Matplotlib Backend

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Python version

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Jupyter version

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Installation

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