create OPropertyChangeListener2 as a modified copy of
OPropertyChangeListener which uses std::mutex instead of osl::Mutex
Change-Id: Ic6be1c62992749e4f0dd23a8c95de63dc45eba3d
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/147430
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>