Step aside, Mr. Darcy.  A new “Pride and Prejudice” spinoff, “The Other Bennet Sister,” has become one of the most viewed BBC shows in the UK over the past year, but that doesn’t mean the star’s of the show are feeling the impact in their real life. Series star Laurie Davidson exclusively joked to Page Six that the show’s viral popularity hasn’t changed his life, as he’s only getting recognized “among my mom’s friends.”  Donal Finn and Laurie Davidson (pictured visiting Page Six) star in the latest “Pride & Prejudice” spinoff “The Other Bennet Sister.” Brian Zak/NY Post Davidson (pictured in “The Other Bennet Sister” with Ella Bruccoleri) said the show’s popularity in the UK hasn’t impacted him that much. Brittbox/ BBC Davidson, 34, quipped, “I don’t think things have changed, it’s not like I’m walking down the street and taxi drivers shout [commentary about the show].…