[StackColoring] Add test for stack-coloring and setjmp (#199959)
As in title. The stack-coloring issue has been fixed here:
https://github.com/llvm/llvm-project/pull/196542
I've attempted some other fix here
https://github.com/llvm/llvm-project/pull/181370 that wasn't right (it
sill missed some cases);
I believe explicit test-case would be valuable to have for this
behavior. The test is reduced from real life application that suffered
from this bug