It's not about making children play with toys associated with the opposite gender, its about not assigning a gender to things and simply allowing children to behave how they want without gendered expectations.

Even though you do not place these gendered expectations on her, society still does and she will be influenced by that. Toy adverts targeting girls will usually have pink backgrounds, she may see other girls on youtube play with dolls/princesses only etc.

You have been a responsible parent and encouraged your child to play with any toy regardless of stereotypes so you have done your part. The next step is to stop this societal gender stereotyping that I described in the last paragraph, which obviously cant be done by one person.