fix: preserve native road metadata order

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@osm-asset/road-compiler",
-  "version": "0.2.0",
+  "version": "0.2.2",
   "private": false,
   "type": "commonjs",
   "main": "src/index.js",

src/compile/layer-manifest.js

@@ -5,15 +5,15 @@
 // to material slot names; the host owns the actual material definitions.
 const LAYER_REGISTRY = Object.freeze([
   { key: "roadSurface", source: "road_surface", role: "surface", materialLayer: "road_surface" },
+  { key: "edgeLines", source: "edge_lines", role: "marking", materialLayer: "lane_separators" },
   { key: "intersectionSurface", source: "intersection_surface", role: "surface", materialLayer: "intersection_surface" },
   { key: "sidewalkSurface", source: "sidewalk_surface", role: "surface", materialLayer: "sidewalks" },
-  { key: "edgeLines", source: "edge_lines", role: "marking", materialLayer: "lane_separators" },
   { key: "laneSeparators", source: "lane_separators", role: "marking", materialLayer: "lane_separators", splitBy: { prop: "color", cases: [{ match: "yellow", material: "native_lane_separator_yellow" }, { default: true, material: "lane_separators" }] } },
   { key: "centerLines", source: "center_lines", role: "marking", materialLayer: "center_lines", splitBy: { prop: "color", cases: [{ match: "white", material: "native_center_line_white" }, { default: true, material: "center_lines" }] } },
-  { key: "crosswalks", source: "crosswalks", role: "marking", materialLayer: "crosswalks" },
-  { key: "vehicleStopLines", source: "vehicle_stop_lines", role: "marking", materialLayer: "vehicle_stop_lines" },
   { key: "directionArrows", source: "direction_arrows", role: "marking", materialLayer: "lane_arrows_webscale" },
   { key: "turnArrows", source: "turn_arrows", role: "marking", materialLayer: "lane_arrows_webscale" },
+  { key: "crosswalks", source: "crosswalks", role: "marking", materialLayer: "crosswalks" },
+  { key: "vehicleStopLines", source: "vehicle_stop_lines", role: "marking", materialLayer: "vehicle_stop_lines" },
   { key: "laneCenterlines", source: "lane_centerlines", role: "semantic" },
   { key: "connectors", source: "connectors", role: "semantic" },
 ]);