[Invite by Email] The 3pid invite is still visible after the invitee joined

[giomfo]

Your use case

I will consider the case where I create a DM by inviting an email:
When an invite is done by email and the person receiving the email creates an account in Element, we are then observing 3 members in the created room: the email address, the new element account, the sender account. This is NOT expected behaviour --> We should only show 2 members, the requester account and the newly created account.

Normally if we clear the cache, the room members are fixed, only 2 members. This means the local storage need to be updated when the 3pid invite is accepted (by removing this 3pid from the room state)

Have you considered any alternatives?

No response

Additional context

No response

Are you willing to provide a PR?

No