🐛 Fixed Unsplash image selector being empty when first opening (#1100)

closes https://github.com/TryGhost/Ghost/issues/10455
- call `loadNew()` when initialising the `unsplash` service. Services are lazy-initialised so this is only called when the service is first injected which happens when the `<GhUnsplash>` component is first rendered

app/services/unsplash.js

@@ -29,6 +29,7 @@ export default Service.extend({
     init() {
         this._super(...arguments);
         this._reset();
+        this.loadNew();
     },
 
     loadNew() {

mirage/config.js

@@ -40,6 +40,7 @@ export default function () {
     this.passthrough('https://count.ghost.org/');
     this.passthrough('http://www.gravatar.com/**');
     this.passthrough('https://cdn.jsdelivr.net/**');
+    this.passthrough('https://api.unsplash.com/**');
 }
 
 // Mock all endpoints here as there is no real API during testing