fix: start ephemeral timer when chat is archived #17501

Job	Run time
Build C library (ubuntu-latest)	2m 26s
Build C library (macos-latest)	2m 18s
cargo deny	33s
Rust doc comments	14s
Lint Rust	2m 39s
Check if node constants are up to date	3s
Check provider database	5s
Python lint	11s
Build deltachat-rpc-server (ubuntu-latest)	2m 5s
Rust tests (ubuntu-latest, 1.83.0)	3m 9s
Build deltachat-rpc-server (macos-latest)	1m 59s
Rust tests (windows-latest, 1.83.0)	7m 40s
Build deltachat-rpc-server (windows-latest)	4m 37s
Rust tests (macos-latest, 1.83.0)	3m 43s
Rust tests (ubuntu-latest, 1.77.0)	3m 30s
CFFI Python tests (ubuntu-latest, 3.13)	6m 31s
CFFI Python tests (macos-latest, 3.13)	4m 49s
CFFI Python tests (ubuntu-latest, pypy3.10)	6m 19s
CFFI Python tests (macos-latest, pypy3.10)	5m 36s
CFFI Python tests (ubuntu-latest, 3.7)	6m 22s
JSON-RPC Python tests (ubuntu-latest, 3.13)	2m 19s
JSON-RPC Python tests (macos-latest, 3.13)	1m 50s
JSON-RPC Python tests (windows-latest, 3.13)	3m 34s
JSON-RPC Python tests (ubuntu-latest, pypy3.10)	2m 2s
JSON-RPC Python tests (macos-latest, pypy3.10)	2m 13s
JSON-RPC Python tests (ubuntu-latest, 3.7)	1m 54s
	1h 18m 41s

Provide feedback