Direct Messages: Status connection management

[plopezlpz]

Problem

On temporary network disconnects or bad network connectivity, status-go might not handle that gracefully and some messages might not be sent or received due to that.

Implementation

1. List critical direct messages, e.g.: 1:1, community join request/response, add contact request/response, group messages.
2. See how/if they handle connection management issues
3. Improve code to handle disconnects, retries and backoff strategies.
4. Get feedback from Direct Message Testing : status reliability testing in unreliable network conditions #5144 and fix issues.

Acceptance Criteria

Network connectivity issues are handled gracefully:

• "Outgoing" messages are retried when the machine is back online if necessary or are clearly marked as not sent with a manual retry button.
• "Incomming" messages are refetched when back online (likely using filter).

Notes

Don't discard adding retry buttons for easy wins.