Fix/issue 915 client session group #2019

Job	Run time
checks / readme-snippets	12s
checks / pre-commit	39s
checks / test (3.12, lowest-direct, windows-latest)	3m 29s
checks / test (3.11, lowest-direct, windows-latest)	2m 30s
checks / test (3.10, locked, windows-latest)	2m 21s
checks / test (3.12, locked, windows-latest)	3m 17s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 2s
checks / test (3.11, locked, ubuntu-latest)	57s
checks / test (3.11, locked, windows-latest)	2m 44s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 13s
checks / test (3.13, lowest-direct, ubuntu-latest)	56s
checks / test (3.10, locked, ubuntu-latest)	51s
checks / test (3.13, locked, ubuntu-latest)	46s
checks / test (3.13, lowest-direct, windows-latest)	2m 50s
checks / test (3.14, locked, windows-latest)	3m 16s
checks / test (3.10, lowest-direct, ubuntu-latest)	59s
checks / test (3.12, locked, ubuntu-latest)	58s
checks / test (3.10, lowest-direct, windows-latest)	2m 24s
checks / test (3.13, locked, windows-latest)	2m 32s
checks / test (3.14, lowest-direct, windows-latest)	2m 27s
checks / test (3.11, lowest-direct, ubuntu-latest)	55s
checks / test (3.14, locked, ubuntu-latest)	2m 29s
all-green	4s
	39m 51s

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