I believe this unintentionally happens as the filmmakers set up the specific story of Wonder Woman 1984 and Diana’s wish specifically.
She cannot truly be who she needs to be with Steve Trevor by her side.
For both Wonder Woman and WW84, before it can reach its stunning conclusion with Diana kicking ass on her own, she has to have a key moment with Steve that emotionally motivates her to finish the job.
Throughout the movie, Diana is realizing she cannot have both.