Third party allocators don't work with sanitizers

[zanmato1984]

Enhancement

Third party allocators (jemalloc/mimalloc) will hook system malloc/free. However sanitizers do the same thing. So they don't work with each other.

Though our current sanitizer builds seem not to be interfered with these allocators, because we are lucky that jemalloc (enabled by default) is somehow either not linked into our UT or lost the battle of hooking malloc/free with sanitizers, we'd better detect such use and disable them.