Cleanups for tagged code instance (#53336)

Two small cleanups to #52233
- Don't use foreign code-instances for native code caching decision
making
- don't return a non-native codeinst for jl_method_compiled

---------

Co-authored-by: Keno Fischer <keno@juliahub.com>

src/gf.c

@@ -2368,12 +2368,13 @@ jl_method_instance_t *jl_get_unspecialized(jl_method_t *def JL_PROPAGATES_ROOT)
 jl_code_instance_t *jl_method_compiled(jl_method_instance_t *mi, size_t world)
 {
     jl_code_instance_t *codeinst = jl_atomic_load_relaxed(&mi->cache);
-    while (codeinst) {
+    for (; codeinst; codeinst = jl_atomic_load_relaxed(&codeinst->next)) {
+        if (codeinst->owner != jl_nothing)
+            continue;
         if (jl_atomic_load_relaxed(&codeinst->min_world) <= world && world <= jl_atomic_load_relaxed(&codeinst->max_world)) {
             if (jl_atomic_load_relaxed(&codeinst->invoke) != NULL)
                 return codeinst;
         }
-        codeinst = jl_atomic_load_relaxed(&codeinst->next);
     }
     return NULL;
 }

src/precompile_utils.c

@@ -182,7 +182,10 @@ static int precompile_enq_specialization_(jl_method_instance_t *mi, void *closur
     jl_code_instance_t *codeinst = jl_atomic_load_relaxed(&mi->cache);
     while (codeinst) {
         int do_compile = 0;
-        if (jl_atomic_load_relaxed(&codeinst->invoke) != jl_fptr_const_return) {
+        if (codeinst->owner != jl_nothing) {
+            // TODO(vchuravy) native code caching for foreign interpreters
+        }
+        else if (jl_atomic_load_relaxed(&codeinst->invoke) != jl_fptr_const_return) {
             jl_value_t *inferred = jl_atomic_load_relaxed(&codeinst->inferred);
             if (inferred &&
                 inferred != jl_nothing &&