Harvey Weinstein's Conviction in California Solid, L.A. D.A.'s Office Says

Harvey Weinstein's guilty verdict in New York was overturned, but there's no way that happens here on the West Coast ... according to the L.A. County D.A.'s Office, that is. While many are questioning whether Weinstein's L.A. conviction will hold up now that a NY appeals court tossed his conviction, the prosecutors who handled the case here in Cali aren't worried one bit ... telling TMZ its case was consistent…