fix: start ephemeral timer when chat is archived #17491

Job	Run time
Lint Rust	2m 40s
Check if node constants are up to date	3s
cargo deny	31s
Rust doc comments	14s
Check provider database	5s
Rust tests (ubuntu-latest, 1.83.0)	3m 10s
Rust tests (windows-latest, 1.83.0)	9m 27s
Rust tests (macos-latest, 1.83.0)	3m 47s
Rust tests (ubuntu-latest, 1.77.0)	3m 19s
Build C library (ubuntu-latest)	2m 23s
Python lint	13s
Build C library (macos-latest)	3m 19s
Build deltachat-rpc-server (ubuntu-latest)	1m 58s
Build deltachat-rpc-server (macos-latest)	1m 56s
Build deltachat-rpc-server (windows-latest)	5m 34s
CFFI Python tests (ubuntu-latest, 3.13)	5m 10s
CFFI Python tests (macos-latest, 3.13)	5m 51s
CFFI Python tests (ubuntu-latest, pypy3.10)	5m 54s
CFFI Python tests (macos-latest, pypy3.10)	4m 48s
CFFI Python tests (ubuntu-latest, 3.7)	4m 57s
JSON-RPC Python tests (ubuntu-latest, 3.13)	1m 59s
JSON-RPC Python tests (macos-latest, 3.13)	2m 2s
JSON-RPC Python tests (windows-latest, 3.13)	2m 49s
JSON-RPC Python tests (ubuntu-latest, pypy3.10)	2m 50s
JSON-RPC Python tests (macos-latest, pypy3.10)	2m 18s
JSON-RPC Python tests (ubuntu-latest, 3.7)	1m 53s
	1h 19m 10s

Provide feedback