fdo#83655: sw: RSID-only hint assertion when inserting in master document

For the temporary document there is no layout so SwTxtNode::MakeFrm()
isn't called.

(regression from 6db39dbd7378351f6476f6db25eb7110c9cfb291)

Change-Id: I711d32a81519edd6840cc29f5cd9dbc57ef21982