[scudo] increase frames per stack to 16 for stack depot (#82427)

8 was very low and it is likely that in real workloads we have more than
an average of 8 frames per stack given on Android we have 3 at the
bottom: __start_main, __libc_init, main, and three at the top: malloc,
scudo_malloc and Allocator::allocate. That leaves 2 frames for
application code, which is clearly unreasonable.