Add better error message when fold bounds are incorrect.

Add better error message when fold bounds are incorrect.
We need to determine why the bounds are not aligned with either
the top of the window or the left of the window.

Bug: 290112152
Bug: 289221820
Test: Manual - run samples and attach debugger.
Change-Id: I6892128febdb7db108c2d406dff0a72bf3e62c8e