New App Bridge POS Toast blocks UI components behind and "X" dismiss does not work

[derrickrc]

We have received multiple complaints from merchants using our POS Link tiles that the latest App Bridge Toast gets in the way of using the app and slows down their checkout process significantly.

Here is a video illustrating the issue for one of our apps (please watch until the end): https://photos.app.goo.gl/itHHuQivL6aSfqKk7

I believe this is a bug with App Bridge specifically, because the Toast component in POS UI Extensions can be dismissed when tapping on the X.

For reference, here is the old toast below which did not cause issues: