The jsCore_heap_profiling task runs on some variants that are using the system allocator so they end up not compiling the heap profiling parameters defined in tcmalloc_parameters.idl which gives us a startup error. Right now we have some tags that should prevent all of the errors from occurring, but they are too broad and exclude more variants than needed. We should create a new tag (maybe `incompatible_system_allocator`) so that we can exclude only the variants that run with system allocator.