Merge pull request #7671 from nextcloud/backport/7624/stable30

[stable30] fix: add close button when open readonly files on mobile app

Author: mejo-

src/components/Editor.vue

@@ -35,6 +35,7 @@
 								:sessions="filteredSessions"
 								:sync-error="syncError"
 								:has-connection-issue="requireReconnect" />
+							<slot name="header" />
 						</ReadonlyBar>
 					</slot>
 				</div>