Meghan Markle is said to be planning to join Prince Harry in the UK this summer for an Invictus Games event in Birmingham, and is reportedly determined to use the visit to reconcile with King Charles. The Duchess of Sussex, who has not been in Britain since 2022, is understood to see her father‑in‑law as the key royal figure with whom she wants to repair relations. This would be Meghan's first substantial return to the UK since Queen Elizabeth I…