fix: ``default-options`` in charms was not read as expected

bin/compose-core

@@ -1153,6 +1153,7 @@ get_compose_service_def () {
     docker_compose=$(get_compose_yml_content) || return 1
     result=$(_get_compose_service_def_cached "$service" "$docker_compose") || return 1
     charm=$(echo "$result" |shyaml get-value charm 2>/dev/null) || return 1
+    metadata=$(charm.metadata "$charm") || return 1
     if default_options=$(printf "%s" "$metadata" | shyaml -y -q get-value default-options); then
         default_options=$(yaml_key_val_str "options" "$default_options") || return 1
         result=$(merge_yaml_str "$default_options" "$result") || return 1