fdo#74150:Numbered list getting display after RT -table-within-table-1.docx

Description:
For pStyle = 'NumberedList1', iLvl and numId was not preserved.
These tags needs to be preserved under numPr in document.xml
These tags are preserved  now.

Conflicts:

	sw/qa/extras/ooxmlexport/ooxmlexport.cxx

Change-Id: Ib6734c9ae55bd72d4fbc0f6d6cae85764ac1a244
Reviewed-on: https://gerrit.libreoffice.org/7767
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Miklos Vajna <vmiklos@collabora.co.uk>