removeTemplate: consider title type

packages/edit-site/src/store/actions.js

@@ -141,11 +141,18 @@ export const removeTemplate =
 				throw lastError;
 			}
 
+			// Depending on how the entity was retrieved it's title might be
+			// an object or simple string.
+			const templateTitle =
+				typeof template.title === 'string'
+					? template.title
+					: template.title?.rendered;
+
 			registry.dispatch( noticesStore ).createSuccessNotice(
 				sprintf(
 					/* translators: The template/part's name. */
 					__( '"%s" deleted.' ),
-					decodeEntities( template.title.rendered )
+					decodeEntities( templateTitle )
 				),
 				{ type: 'snackbar', id: 'site-editor-template-deleted-success' }
 			);