[PM-1408] Vault Items with null Folder Value not Handled Correctly (#5066)

* Added optional chaining to folder view object to handle when the foilder value is null

* Set folder to null during cleanup and added check on the view component to check if the folder is nul before rendering the html

libs/angular/src/vault/components/view.component.ts

@@ -434,6 +434,7 @@ export class ViewComponent implements OnDestroy, OnInit {
   private cleanUp() {
     this.totpCode = null;
     this.cipher = null;
+    this.folder = null;
     this.showPassword = false;
     this.showCardNumber = false;
     this.showCardCode = false;