api(rust and jsonrpc): marknoticed_all_chats method to mark all chats as notices, including muted ones. (#7709)

made for solving

https://github.com/deltachat/deltachat-desktop/issues/5891#issuecomment-3687566470

will also be more efficient, because desktop currently loads all fresh
messages to find out which chats to mark as noticed.
76d32bfc93/packages/frontend/src/components/AccountListSidebar/AccountItem.tsx (L334)


# progress
- [x] implementation
- [x] write a test
- [x] make a pr to use it in desktop
https://github.com/deltachat/deltachat-desktop/pull/5923
- [x] address review comments

---------

Co-authored-by: WofWca <wofwca@protonmail.com>

deltachat-ffi/deltachat.h

@@ -1563,7 +1563,7 @@ dc_array_t*     dc_wait_next_msgs            (dc_context_t* context);
  * Mark all messages in a chat as _noticed_.
  * _Noticed_ messages are no longer _fresh_ and do not count as being unseen
  * but are still waiting for being marked as "seen" using dc_markseen_msgs()
- * (IMAP/MDNs is not done for noticed messages).
+ * (read receipts aren't sent for noticed messages).
  *
  * Calling this function usually results in the event #DC_EVENT_MSGS_NOTICED.
  * See also dc_markseen_msgs().