Fix asan false-positive errors: (dotnet/coreclr#15563)

Fix asan false-positive errors: (dotnet/coreclr#15563)

- Call __asan_handle_no_return in RtlRestoreContext if it doesn't return
  and in ThrowExceptionFromContextInternal function;

- Increase alternate signal stack size and use it also for asan.

Commit migrated from https://github.com/dotnet/coreclr/commit/9639f454de21775ab1031471c2acb64738b77c95