catch errors when closing file conflict dialog

Signed-off-by: Robin Appelman <robin@icewind.nl>
Signed-off-by: npmbuildbot-nextcloud[bot] <npmbuildbot-nextcloud[bot]@users.noreply.github.com>

Author: icewind1991

core/js/dist/login.js

@@ -930,7 +930,11 @@ const Dialogs = {
 					closeButton: null,
 					close: function() {
 						self._fileexistsshown = false
-						$(this).ocdialog('destroy').remove()
+						try {
+							$(this).ocdialog('destroy').remove()
+						} catch (e) {
+							// ignore
+						}
 					}
 				})