On first startup, OpenAI key input field is 1 character too short

[rDarge]

I've observed that when starting VGT for the first time, one of the characters of my key will get truncated after I enter it on the pop-up modal, and subsequent translation requests will fail until this is corrected. I've fixed this locally on my fork (rDarge@bcc1929), and it'd be nice to have it fixed in the OG repo too.