force a require if binding with different uuid is present.

This works around `Base.Iterators` shadowing `Iterators`,
as noted in #21492.

Author: vchuravy

src/dump.c

@@ -2282,8 +2282,12 @@ static jl_value_t *read_verify_mod_list(ios_t *s, arraylist_t *dependent_worlds)
         uint64_t uuid = read_uint64(s);
         jl_sym_t *sym = jl_symbol(name);
         jl_module_t *m = NULL;
-        if (jl_binding_resolved_p(jl_main_module, sym))
+        if (jl_binding_resolved_p(jl_main_module, sym)) {
             m = (jl_module_t*)jl_get_global(jl_main_module, sym);
+            // Potentially two modules with the same name.
+            if (m && jl_is_module(m) && m->uuid != uuid)
+                m = NULL;
+        }
         if (!m) {
             static jl_value_t *require_func = NULL;
             if (!require_func)