In 80de96488a (#3397) we introduced a new
error if we detect a binding loop from the Window geomerty to its layout.
But it looks like this causes a lot of error in existing project, so
make it a warning instead.
It will continue to be an error in the live preview as this will cause a
panic otherwise.
This commit also change the text of the error to include the actual
binding loop. I hope this makes it easier for users to see the loop and
help to fix it.
The Window geometry depends on its constraints, so its constraints
cannot depends on its geometry
This fixes Infinitely growing layout, and other panics
Fixes#3989Fixes#2902Fixes#8065
