MC-3775: Button editable state is not consistent with the options panel appearing

- Fix slider duplication issue

Author: davemacaulay

app/code/Magento/PageBuilder/view/adminhtml/web/js/content-type/slide/preview.js

@@ -140,6 +140,17 @@ export default class Preview extends BasePreview {
      * @returns {Uploader}
      */
     public getUploader() {
+        const dataStore = this.parent.dataStore.get() as any[];
+        const initialImageValue = dataStore[this.config.additional_data.uploaderConfig.dataScope] || "";
+
+        // Create uploader
+        this.uploader = new Uploader(
+            "imageuploader_" + this.parent.id,
+            this.config.additional_data.uploaderConfig,
+            this.parent.id,
+            this.parent.dataStore,
+            initialImageValue,
+        );
         return this.uploader;
     }
 
@@ -251,18 +262,6 @@ export default class Preview extends BasePreview {
 
         events.on(`${this.config.name}:mountAfter`, (args: ContentTypeMountEventParamsInterface) => {
             if (args.id === this.parent.id) {
-                const dataStore = this.parent.dataStore.get();
-                const initialImageValue = dataStore[this.config.additional_data.uploaderConfig.dataScope] || "";
-
-                // Create uploader
-                this.uploader = new Uploader(
-                    "imageuploader_" + this.parent.id,
-                    this.config.additional_data.uploaderConfig,
-                    this.parent.id,
-                    this.parent.dataStore,
-                    initialImageValue,
-                );
-
                 // Update the display label for the slide
                 const slider = this.parent.parent;
                 this.displayLabel($t(`Slide ${slider.children().indexOf(this.parent) + 1}`));