fixup! Reland: Allow re-initialization and caching of foreign types (#47407)

Author: vchuravy

src/datatype.c

@@ -72,7 +72,7 @@ JL_DLLEXPORT jl_typename_t *jl_new_typename_in(jl_sym_t *name, jl_module_t *modu
     jl_atomic_store_relaxed(&tn->cache, jl_emptysvec);
     jl_atomic_store_relaxed(&tn->linearcache, jl_emptysvec);
     tn->names = NULL;
-    tn->hash = bitmix(bitmix(module ? module->build_id.lo : 0, name->hash), 0xa1ada1da);
+    tn->hash = bitmix(bitmix(module ? module->build_id : 0, name->hash), 0xa1ada1da);
     tn->_reserved = 0;
     tn->abstract = abstract;
     tn->mutabl = mutabl;