This test sets a breakpoint on malloc, as a way to stop early in
dyld's setting up code, before the system libraries are initialized
so we can confirm that we don't fetch the Objective-C class table
before it's initialized.
In macOS 15 (macOS Sonoma), dyld doesn't call malloc any longer,
so this heuristic/trick isn't working. It does call other things
called *alloc though, so I'm changing this to use a regex breakpoint
on that, to keep the test working.