We have words in English that have more than one meaning.
No, I think that the translation in Genesis of *evil* for knowing good and evil, is the best one for that passage. I don’t know that forcing that definition into Isaiah is the right one. The other definitions make sense, more sense IMO.
Also, there are other translations of Scripture which use the other meanings. Even in the context of Isaiah 45:9, I don’t see that it justifies charging God with being the creator of evil, as in moral evil. That is something I am NOT comfortable with.
Creating calamity or adversity, which are considered evil, is not the same as claiming that God created moral evil.
Then who or what created evil? Or has it existed for eternity along with God? No, I am comfortable with not judging God. I accept that what he says is true. The potter makes a vase, but that does not make the potter a vase nor does he have the qualities of the vase.