similar to #1714 affects Version V31 (installed version V31.0.7)

Stack Trace:
{"reqId":"***","level":3,"time":"2025-07-31T16:57:21+00:00","remoteAddr":"****","user":"XXXX","app":"no app in context","method":"POST","url":"/ocs/v2.php/apps/files/api/v1/templates/create","message":"OCA\\Circles\\Model\\ShareWrapper::getCircle(): Return value must be of type OCA\\Circles\\Model\\Circle, null returned in file 'apps/circles/lib/Model/ShareWrapper.php' line 263","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:141.0) Gecko/20100101 Firefox/141.0","version":"31.0.7.1","exception":{"Exception":"Exception","Message":"OCA\\Circles\\Model\\ShareWrapper::getCircle(): Return value must be of type OCA\\Circles\\Model\\Circle, null returned in file 'apps/circles/lib/Model/ShareWrapper.php' line 263","Code":0,"Trace":[{"file":"lib/private/AppFramework/App.php","line":161,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"lib/private/Route/Router.php","line":315,"function":"main","class":"OC\\AppFramework\\App","type":"::"},{"file":"ocs/v1.php","line":49,"function":"match","class":"OC\\Route\\Router","type":"->"},{"file":"ocs/v2.php","line":7,"args":["ocs/v1.php"],"function":"require_once"}],"File":"lib/private/AppFramework/Http/Dispatcher.php","Line":146,"Previous":{"Exception":"TypeError","Message":"OCA\\Circles\\Model\\ShareWrapper::getCircle(): Return value must be of type OCA\\Circles\\Model\\Circle, null returned","Code":0,"Trace":[{"file":"apps/circles/lib/ShareByCircleProvider.php","line":673,"function":"getCircle","class":"OCA\\Circles\\Model\\ShareWrapper","type":"->"},{"file":"lib/private/Share20/Manager.php","line":1700,"function":"getAccessList","class":"OCA\\Circles\\ShareByCircleProvider","type":"->"},{"file":"lib/private/Share20/ShareHelper.php","line":33,"function":"getAccessList","class":"OC\\Share20\\Manager","type":"->"},{"file":"apps/activity/lib/FilesHooks.php","line":584,"function":"getPathsForAccessList","class":"OC\\Share20\\ShareHelper","type":"->"},{"file":"apps/activity/lib/FilesHooks.php","line":152,"function":"getUserPathsFromPath","class":"OCA\\Activity\\FilesHooks","type":"->"},{"file":"apps/activity/lib/FilesHooks.php","line":82,"function":"addNotificationsForFileAction","class":"OCA\\Activity\\FilesHooks","type":"->"},{"file":"apps/activity/lib/FilesHooksStatic.php","line":27,"function":"fileCreate","class":"OCA\\Activity\\FilesHooks","type":"->"},{"file":"lib/private/legacy/OC_Hook.php","line":85,"function":"fileCreate","class":"OCA\\Activity\\FilesHooksStatic","type":"::"},{"file":"lib/private/Files/View.php","line":1322,"function":"emit","class":"OC_Hook","type":"::"},{"file":"lib/private/Files/View.php","line":1254,"function":"runHooks","class":"OC\\Files\\View","type":"->"},{"file":"lib/private/Files/View.php","line":529,"function":"basicOperation","class":"OC\\Files\\View","type":"->"},{"file":"lib/private/Files/Node/Folder.php","line":171,"function":"touch","class":"OC\\Files\\View","type":"->"},{"file":"lib/private/Files/Template/TemplateManager.php","line":174,"function":"newFile","class":"OC\\Files\\Node\\Folder","type":"->"},{"file":"apps/files/lib/Controller/TemplateController.php","line":94,"function":"createFromTemplate","class":"OC\\Files\\Template\\TemplateManager","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"lib/private/AppFramework/Http/Dispatcher.php","line":200,"function":"create","class":"OCA\\Files\\Controller\\TemplateController","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"lib/private/AppFramework/Http/Dispatcher.php","line":114,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"lib/private/AppFramework/App.php","line":161,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"lib/private/Route/Router.php","line":315,"function":"main","class":"OC\\AppFramework\\App","type":"::"},{"file":"ocs/v1.php","line":49,"function":"match","class":"OC\\Route\\Router","type":"->"},{"file":"ocs/v2.php","line":7,"args":["ocs/v1.php"],"function":"require_once"}],"File":"apps/circles/lib/Model/ShareWrapper.php","Line":263},"message":"OCA\\Circles\\Model\\ShareWrapper::getCircle(): Return value must be of type OCA\\Circles\\Model\\Circle, null returned in file 'apps/circles/lib/Model/ShareWrapper.php' line 263","exception":{},"CustomMessage":"OCA\\Circles\\Model\\ShareWrapper::getCircle(): Return value must be of type OCA\\Circles\\Model\\Circle, null returned in file 'apps/circles/lib/Model/ShareWrapper.php' line 263"}}

It seems that PR #1708 was applied only to V30 and earlier but not to V31, since
the code is present in https://github.com/nextcloud/circles/blob/v30.0.10/lib/ShareByCircleProvider.php#L672 but not in https://github.com/nextcloud/circles/blob/v31.0.7/lib/ShareByCircleProvider.php#L672

When we apply the PR #1708 in our installtaion (V31.0.7) the error does not occur anymore

@ArtificialOwl