It's a bit too optimistic to say the June 21st military strikes somehow confirmed the "No outcome" for the Polymarket dates on June 19th and 20th.
Those earlier markets would have closed as "No outcome" anyway, simply because nothing happened on those specific days, a clear condition for their resolution.
The later event couldn't possibly change what already didn't happen; you can't retroactively "trigger" a non-event from days earlier, as the window for those bets was already closed.
It feels like trying to say my bus being late today somehow caused it to be on time yesterday, which just isn't how time works.