Flaky tests in windows with some controls

[mattleibow]

Description

Related to:

• [Bug] Slider and switch have some color issues #1275
• Resolve issues with the Switch Track Color tests on Windows #9113
• [Windows] Resolve issues with the Switch Track Color tests #20221

The PR tried to fix this by attaching to the window, and seems to have worked on some machines. However, the screen capture logic already attached to the window. It may have been the double logic that slowed down the test enough locally to finish the animations

For example, the switch tests have an initial state of "on" but it appears the WinUI control does not and thus will animate once it is in the view. You can even spot the animation if you are fast enough.

We need to slow down the test or wait a bit for the animations to complete.