web/satellite/vuetify-poc: fix file preview

This change fixes an issue where clicking a file in the Vuetify UI's
object browser would open an empty file preview dialog.

Change-Id: I5e21cf2e8c57911ac2708110f6ad23f376f86a54

web/satellite/vuetify-poc/src/components/BrowserTableComponent.vue

@@ -416,7 +416,7 @@ function onFileClick(file: BrowserObject): void {
         return;
     }
 
-    obStore.setObjectPathForModal(file.path ?? '' + file.Key);
+    obStore.setObjectPathForModal((file.path ?? '') + file.Key);
     previewDialog.value = true;
     isFileGuideShown.value = false;
     LocalData.setFileGuideHidden();