[NC] Work arround issue nextcloud/server#33751

That issue is fixed in NC 25, but it will likely not be backported to
NC 24.

It produces issues when modifying users and not modifying their
display name.

See also:	https://github.com/nextcloud/server/issues/33751

dd-sso/admin/src/admin/lib/nextcloud.py

@@ -275,10 +275,13 @@ class Nextcloud:
                     self._request("PUT", url, data=data, headers=headers)
                 )
                 if result["ocs"]["meta"]["statuscode"] == 102:
-                    raise ProviderItemExists
-                if result["ocs"]["meta"]["statuscode"] == 104:
+                    if result["ocs"]["meta"].get("message") != "Invalid displayname":
+                        # Workaround for https://github.com/nextcloud/server/issues/33751
+                        # Fixed on NC 25
+                        raise ProviderItemExists
+                elif result["ocs"]["meta"]["statuscode"] == 104:
                     raise ProviderGroupNotExists
-                if result["ocs"]["meta"]["statuscode"] != 100:
+                elif result["ocs"]["meta"]["statuscode"] != 100:
                     log.error("Get Nextcloud provider user add error: " + str(result))
                     raise ProviderOpError
             except: