While "traditional commentators" may need a bit of a definition, I don't believe any of them do. Some do not comment on this, and those who do say emphatically that it was either referring to a very early period (i.e. before Moshe), and/or that it was written "Bederech Nevuah". See here for all the Mefarshim I have looked through.
The only exception to this might be the statement of RDZ Hoffman, who seems to perhaps imply that Ibn Ezra would support later authorship of this section (despite Ibn Ezra's attacks on Yitzchaki for suggesting such a thing). Judge for yourself:
כבר הראב״ע בפירושו לתחילת ספר דברים רומז לקושי שטמון בפסוק זה — כיצד אפשר לדבר על המלוכה בישראל מאות שנים לפני משיחתו של מלך ישראל הראשון.
R Hoffman goes on to dismantle potential biblical criticism that relates to this section. (As does Shadal, as well as other Mefarshim, see the link above.)
If it was indeed his intention to imply this about Ibn Ezra, it is simply wrong, as Ibn Ezra does not mention this section in Devarim, in addition to the fact that almost all of the reasons/interpretations for/of the "Sod Hashenim Asar" would not apply to this section due to a suggestion of very late authorship, the large number of verses, and his own arguing against this very point.