Fix files_sharing app LoadSidebar event (#17821)

apps/files_sharing/appinfo/app.php

apps/files_sharing/composer/composer/autoload_classmap.php

apps/files_sharing/composer/composer/autoload_static.php

apps/files_sharing/js/dist/additionalScripts.js

apps/files_sharing/js/dist/additionalScripts.js.map

apps/files_sharing/js/dist/files_sharing.js

apps/files_sharing/js/dist/files_sharing.js.map

apps/files_sharing/js/dist/files_sharing_tab.js

apps/files_sharing/js/dist/files_sharing_tab.js.map

apps/files_sharing/js/dist/main.js

apps/files_sharing/js/dist/main.js.map

apps/files_sharing/lib/AppInfo/Application.php

apps/files_sharing/lib/Listener/LoadAdditionalListener.php

apps/files_sharing/lib/Listener/LoadSidebarListener.php

apps/files_sharing/list.php

apps/files_sharing/src/index.js

apps/files_sharing/src/share.js

apps/files_sharing/tests/TestCase.php

apps/files_sharing/webpack.js

apps/files_trashbin/tests/TrashbinTest.php