Impossible to accept an invitation to a subspace without the notification when you are a already a member of the parent

### Steps to reproduce

1. Have two users, u1 and u2
1. Create a Space A with u1
2. Create a nested/subspace/child Space B of Space A with u1
3. Invite u2 into Space A
4. u2 accepts invitation to Space A
5. Invite u2 into Space B

### Outcome

### Outcome

#### What did you expect?
That it's possible to join the space in the space overview in the app.

#### What happened instead?
A red Exclamation mark appears on the Overview Button:

But opening the overview doesn't allow to join the space(Space A=JoachimsTestSpace2, Space B=JoachimsTestSpace3) :
If you tap the Space it opens the usual menu for the space, but not the view/dialog where you can accept the invite.

Curiously, leaving Space A allows to join to Space B:
If you tab the Space here, you can accept the invitition.

### Your phone model

Fairphone 3, but i heard reports of this from several people

### Operating system version

_No response_

### Application version and app store

1.6.14

### Homeserver

rote.tools (Synapse)

### Will you send logs?

No

### Are you willing to provide a PR?

No