Utility area show/hide animates with push/pull rather than revealing

[FastestMolasses]

Description

Similar to Xcode, the utility area will push or pull the content when collapsing, instead of just clipping through the content.

Related Issues

Closes #1635

Checklist

• I read and understood the contributing guide as well as the code of conduct
• The issues this PR addresses are related to each other
• My changes generate no new warnings
• My code builds and runs on my machine
• My changes are all related to the related issue above
• I documented my code

Screenshots

utility.area.mov

[FastestMolasses]

There's a small lag between the tab bar and the content beneath it. I tried animation types like .default and .linear but they just end up snapping between positions. Only ones that work is ones like .smooth or .snappy. Anyone know how to make the content offset match more closely with the position of the tab bar?

[austincondiff]

Very nice! Yeah, it’s like two animations are being applied, and the easing methods are not matching up. If you track through the video you can see it get farther away then get passed up.

Maybe check for additional animations you may have forgotten to remove?

[FastestMolasses]

Doesnt seem like any other animation is affecting it. Not sure what the issue is. It does look like it's an easing issue, but none of the other animation types work, so its really weird.

[austincondiff]

Closing this PR as it has been fixed with #1845.