refactor: replace lowlevel Server decorators with on_* constructor kwargs #582

Job	Run time
checks / readme-snippets	10s
checks / pre-commit	17s
checks / test (3.10, locked, windows-latest)	5m 47s
checks / test (3.12, locked, windows-latest)	5m 57s
checks / test (3.10, lowest-direct, ubuntu-latest)	4m 52s
checks / test (3.12, lowest-direct, ubuntu-latest)	4m 53s
checks / test (3.13, lowest-direct, ubuntu-latest)	6m 0s
checks / test (3.12, lowest-direct, windows-latest)	6m 3s
checks / test (3.11, locked, ubuntu-latest)	4m 52s
checks / test (3.13, locked, windows-latest)	5m 50s
checks / test (3.13, lowest-direct, windows-latest)	5m 41s
checks / test (3.11, locked, windows-latest)	5m 34s
checks / test (3.14, lowest-direct, windows-latest)	5m 27s
checks / test (3.13, locked, ubuntu-latest)	4m 49s
checks / test (3.11, lowest-direct, ubuntu-latest)	4m 55s
checks / test (3.10, locked, ubuntu-latest)	4m 55s
checks / test (3.11, lowest-direct, windows-latest)	5m 44s
checks / test (3.12, locked, ubuntu-latest)	5m 21s
checks / test (3.14, locked, ubuntu-latest)	6m 11s
checks / test (3.10, lowest-direct, windows-latest)	5m 33s
checks / test (3.14, locked, windows-latest)	7m 24s
checks / test (3.14, lowest-direct, ubuntu-latest)	5m 7s
all-green	3s
	1h 51m 25s

Provide feedback