testdriver: `collect*_stats('all')` should pass RESIDENCY_OPTS
It seems that collect_compiler_stats('all') completely ignores Note [Measuring residency], which leads to annoying fluctuations for recently added tests such as T11545 and T15304.
Not sure what's the best way to fix that; currently, collect_compiler_residency calls collect_compiler_stats, but maybe it should be the other way around?
At this point, residency profiling without RESIDENCY_OPTS is bound to annoy in CI.