Every woman who has advanced far enough has a story about a decision she learned about afterward. Not a hostile exclusion, usually. Just a room that assembled without her and moved on.
The reflexive advice is to work harder and be more visible. Visibility is pleasant. It is not the same as being counted. Counting happens where budgets are set, where roles are scoped and where names are put forward.
Visibility is pleasant. Decision rights are the thing worth organizing for.
There are two practical routes. The first is to make your work legible to the people already in the room, in the language they use, before they need it. The second is to build a room of your own and make it useful enough that others ask to be in it.
PAW exists largely because of the second route. When the existing rooms are slow to open, the answer is not resentment but construction, done well enough that the quality is not in question.
Then, when you are inside, hold the door. Not symbolically. With a name, a nomination and a follow-up.