Can you apply for a standard visitor visa if you have a conditional discharge in the U.S. from less than 12 months ago?

Long story short, I live in the United States and was charged with misdemeanor trespassing on abandoned property. Was given a conditional discharge in December instead of a formal conviction. I had to complete 24 hours of community service and in exchange the charges will be dropped.

I recently applied for an ETA to travel to the UK, as I have a 2 week study abroad trip to Paris and London this Summer. I was just notified that the application was denied because I had a criminal conviction within the last twelve months, but I may still apply for a visa. Conditional discharges don't count as convictions in my state, but I was told they do for UK visas/ETAs so I disclosed it just in case on my ETA applicarion. Can I actually apply for a visa then (I believe I should go for the standard visitor one)? Or will it be mandatorily refused? Suffice to say this will kinda screw up my life a bit if I can't.

Thanks 👍