SOS/DAC stack unwinding asserts on a stack overflow exception on Linux

[mikem8361]

When we service stack overflow and other exceptions on Linux we switch to an alternate stack and the SOS/DAC stack unwinder asserts in debug because the stack pointer addresses are not in the threads normal stack range.

[tommcdon]

@cshung this is likely a problem in DAC unwind code. Feel free to move this issue to coreclr.

[noahfalk]

I just made this issue low-pri unless there is some known user-visible problems that happen concurrently with the assert?

[mikem8361]

To answer's @noahfalk question: SOS doesn't properly unwind stack overflow in the clrstack command. See issue: https://github.com/dotnet/coreclr/issues/24779