Order callback calls by distance to click position

All callback calls for hits with a tolerance > 0 are queued and
called ordered by distance after all hits are detected.

src/ol/renderer/Layer.js

@@ -106,10 +106,19 @@ class LayerRenderer extends Observable {
    * @param {import("../PluggableMap.js").FrameState} frameState Frame state.
    * @param {number} hitTolerance Hit tolerance in pixels.
    * @param {import("./vector.js").FeatureCallback<T>} callback Feature callback.
-   * @return {T|void} Callback result.
+   * @param {Array<import("./Map.js").HitMatch<T>>} matches The hit detected matches with tolerance.
+   * @return {T|undefined} Callback result.
    * @template T
    */
-  forEachFeatureAtCoordinate(coordinate, frameState, hitTolerance, callback) {}
+  forEachFeatureAtCoordinate(
+    coordinate,
+    frameState,
+    hitTolerance,
+    callback,
+    matches
+  ) {
+    return undefined;
+  }
 
   /**
    * @abstract