Your senior year grades, even just first semester, will not be used for the UC GPA.
Here is a profile of the UCLA Class from 3 years ago – it’s the most recent year I have seen where the specifically broke out Admit GPA’s by OOS applicants. Note they still used standardized test scores as part of admission then. They are now test blind and will not look at your SAT score. Most likely with no standardized test scores and even more applicants each year, there has probably been upward pressure on the admit GPA’s. Even 3 years ago the bottom quartile (i.e. the bottom 25% of admits) has an average UW UC GPA off 3.93 and an uncapped UC GPA of 4.46. So you’re below the 25% level, if it were steady or higher than 3 years ago.
I wouldn’t let that discourage you – UCLA looks at more than just grades and it seems like you have some great other aspects of your application, and your grades aren’t that far outside the range. If it’s one of your top choices, you should definitely apply. Just set your expectation that it’s a reach.
Good luck.