gh-132011: Fix crash on invalid CALL_LIST_APPEND deoptimization (#132018)

Co-authored-by: Victor Stinner <vstinner@python.org>
Co-authored-by: Peter Bierma <zintensitydev@gmail.com>

Python/bytecodes.c

@@ -4235,7 +4235,7 @@ dummy_func(
 
             PyInterpreterState *interp = tstate->interp;
             DEOPT_IF(callable_o != interp->callable_cache.list_append);
-            assert(self_o != NULL);
+            DEOPT_IF(self_o == NULL);
             DEOPT_IF(!PyList_Check(self_o));
             DEOPT_IF(!LOCK_OBJECT(self_o));
             STAT_INC(CALL, hit);