Prince Harry is reportedly “fed up” with both the “Californian lifestyle” and being away from Britain, according to a Sussex insider. The Duke of Sussex is said to be turning up the “pressure” to convince a U.K.-weary Meghan Markle to uproot their lives and “raise their children” in the United Kingdom. With news that the fifth in line to the throne is set to host a St Paul’s Cathedral-set, 10th-anniversary celebration for his Invictus Games in May, the ex-actress may be “bending to the pressure.” In his late 2023 book, Endgame, author Omid Scobie shared that the Duchess of Sussex likely “never…