revert saving response data in lastShareData when updating share
revert saving response data in lastShareData when updating share

this was added in #35204 but causes problems when an invalid request is done but the original `lastShareData` need to be accessed e.g `\Sharing::getMimeTypeOfLastSharedFile`

owncloud/core,owncloud/core,owncloud/core,owncloud/core,phil-davis/core,owncloud/core