Function bitmask_layers

perro_editor/res/scripts/ui/editor_inspector_values.rs:4587–4591

(mask: BitMask)

                };
                let Some((name, _)) = fields.get(*index) else {
                    return false;
                };
                if row.source == "script" {
                    node.script_vars.to_mut().retain(|(field, _)| field != name);
                } else {
                    node.data.fields.to_mut().retain(|(field, _)| field != name);
                }
            }