problem:
in LOK/online to support async save, files in jails may have
different extensions (ie: .upload, .uploading)
this caused problem to detect files as original file name may not exist.
As result property like file size were always set to 0
Change-Id: I552aef203297470d01032659a266210970129e66
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/165769
Tested-by: Jenkins CollaboraOffice <jenkinscollaboraoffice@gmail.com>
Reviewed-by: Caolán McNamara <caolan.mcnamara@collabora.com>
(cherry picked from commit aa4e10efc6)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/166171
Tested-by: Jenkins
