This article only looks at production. The US has the fourth-largest uranium resource in the world, behind Australia, Canada, and Kazakhstan. So 3 of the 4 largest uranium deposits are allied countries. Uranium is a relatively common metal.
Kazakhstan tries to balance interests of all three sides (Russia, China, the West), and given its economic situation and geographic position, this is the only sensible way for them to survive.
If Russia wins in Ukraine, Kazakhstan will likely downgrade its relations with us, because now they will be threatened with some deadly Russian love. The country is vast, but thinly populated, and hard to defend.
If Russia loses in Ukraine, or at least gets its army mauled beyond recognition, the Western influence in Kazakhstan may increase.