Did you, by chance, lose some wheel weights? Check to see if you see white sticker residue, but no weights.
Or, if you did bend the rim....you'd see....wait for it.......a bent rim. Look around the perimeter of the rim and see if you see something like this
bent rim. If so, the picture is from Woody's Wheel Works and they fix bent rims.
While you're down there, look at your spokes. Any broken or loose? Again, Woody's is a good option if you've actually damaged the wheel.
Or lift the front end and spin the wheel looking to see if it's still "true". To do it right you'd need a run-out gauge, but if it's bad enough that you're getting bounce...you should be able to see if things are out of true.
Alternatively, maybe you tweaked something else. If the impact was strong enough to bend your handlebars you might have tweaked other parts of the suspension. Maybe a fork seal was blown? Shock tube...kinda less and less likely IMO though.