This does 2 things:
- Removes `AccountSwitchInterceptor`, the main culprit for the bug. APIs
can no longer change their base url after they have been created. As a
result they are not Singletons anymore.
- Additionally, I refactored how MainActivity handles Intents to make it
less likely to have multiple instances of it active.
Here is how I could reliably reproduce the bug:
- Be logged in with account A and B
- Write a post with account A, cancel it before it sends (go into flight
mode for that)
- Switch to account B
- Open the "this post failed to send" notification from account A,
drafts will open
- Go back. You are in the MainActivity of account A, everything seems
fine.
- Go back again. You are in the old, now broken MainActivity of account
B. It uses the database of account B but the network of account A.
Refreshing will show posts from A.
closes#4567closes#4554closes#4402closes#4148closes#2663
and possibly #4588