[BUG] Click and Button Presses don't work on Windows CI with `pympl` dependency

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If someone had just a moment, it would be tremendously helpful to get some feedback about the failed CIs here https://github.com/mne-tools/mne-python/pull/10913. Basically, the tests that use fake clicking and key presses with `matplotlib` fail when `ipympl` is added as a dependency but only on `Windows`. I've checked and they pass locally on `MacOS` as well as on the CIs. Is there some global variable or setting that `ipympl` might be modifying and maybe we could change it back? The difference between all the 22 tests failing and all the tests passing was just adding `ipympl` to the dependencies list, it was run before and after adding those. Thanks!

从 pull request #10913 中失败的 Windows CI 开始，找出模拟 matplotlib 点击和按键操作的 22 个测试。比较将 ipympl 添加到依赖项之前和之后的运行结果，然后确定在存在该依赖项的情况下，是什么更改使这些测试能够在 Windows 上通过。

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