Line spacing is not preserved for styles.

Description :
In StyleSheetTable.cxx, while setting the property "ParaInteropGrabBag" throws an exception.
Hence rest of the properties are not set.

Implimentation :
Skip that property so that rest of the properties will not be lost.

Change-Id: Id488de71bc5f893a7401420d9e63e4405b90f760
Reviewed-on: https://gerrit.libreoffice.org/8902
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Miklos Vajna <vmiklos@collabora.co.uk>