Website updates

Author: tschaub

dist/en/main/apidoc/module-ol_Tile-Tile.html

@@ -466,7 +466,7 @@ <h4 class="name">
 
         <div class="tag-source">
             <a href="https://github.com/openlayers/openlayers/blob/main/src/ol/Tile.js">Tile.js</a>,
-            <a href="https://github.com/openlayers/openlayers/blob/main/src/ol/Tile.js#L189">line 189</a>
+            <a href="https://github.com/openlayers/openlayers/blob/main/src/ol/Tile.js#L193">line 193</a>
         </div>
 
     </div>

dist/en/main/examples/common.js

@@ -172,6 +172,10 @@ class Tile extends EventTarget {
    * @api
    */
   setState(state) {
+    if (this.state === TileState.EMPTY) {
+      // no more state changes
+      return;
+    }
     if (this.state !== TileState.ERROR && this.state > state) {
       throw new Error('Tile load sequence violation');
     }