GH-139653: Only raise an exception (or fatal error) when the stack pointer is about...

GH-139653: Only raise an exception (or fatal error) when the stack pointer is about to overflow the stack. (GH-141711)

Only raises if the stack pointer is both below the limit *and* above the stack base.
This prevents false positives for user-space threads, as the stack pointer will be outside those bounds
if the stack has been swapped.