The tab stop list is a paragraph property, and RTF requires to repeat it
after \s as direct formatting, otherwise the parser should be assumed
that the tab stop list is cleared as a direct formatting.

Non-buffered text handles that in getDefaultSPRM(), handle it directly
in the RTF_PARD code for buffered text.

Change-Id: I16b09bc4c177df5a74d16653b829b198aa1a800f