Fix tests and types

Don't show in changelog

Author: 4ian

Extensions/Spine/JsExtension.js

@@ -516,7 +516,7 @@ module.exports = {
 
               // Apply the default skin if configured.
               const skinName = object.getSkinName();
-              if (skinName) {
+              if (skinName && this._spine) {
                 try {
                   this._spine.skeleton.setSkinByName(skinName);
                   this._spine.skeleton.setSlotsToSetupPose();

Extensions/Spine/spineruntimeobject-pixi-renderer.ts

@@ -322,7 +322,6 @@ namespace gdjs {
     }
 
     setSkin(skinName: string): void {
- 
       if (!isSpine(this._rendererObject)) return;
 
       const skeleton = this._rendererObject.skeleton;

newIDE/app/src/AssetStore/InstallAsset.spec.js

@@ -897,7 +897,8 @@ describe('InstallAsset', () => {
       addSerializedExtensionsToProject(
         mockEventsFunctionsExtensionsState,
         project,
-        [serializedExtension]
+        [serializedExtension],
+        [serializedExtension.name]
       );
 
       expect(
@@ -922,7 +923,7 @@ describe('InstallAsset', () => {
         mockEventsFunctionsExtensionsState,
         project,
         [serializedExtension],
-        false
+        []
       );
 
       expect(