fix(client): unmask connection errors in ClientSessionGroup teardown (#915) #2005

Job	Run time
checks / readme-snippets	16s
checks / pre-commit	23s
checks / test (3.10, locked, windows-latest)	2m 7s
checks / test (3.10, lowest-direct, windows-latest)	2m 44s
checks / test (3.10, lowest-direct, ubuntu-latest)	56s
checks / test (3.13, lowest-direct, ubuntu-latest)	49s
checks / test (3.10, locked, ubuntu-latest)	56s
checks / test (3.11, lowest-direct, windows-latest)	3m 6s
checks / test (3.11, lowest-direct, ubuntu-latest)	53s
checks / test (3.11, locked, ubuntu-latest)	57s
checks / test (3.11, locked, windows-latest)	2m 50s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 3s
checks / test (3.14, locked, ubuntu-latest)	2m 23s
checks / test (3.13, lowest-direct, windows-latest)	2m 39s
checks / test (3.12, locked, ubuntu-latest)	59s
checks / test (3.12, lowest-direct, windows-latest)	3m 22s
checks / test (3.13, locked, windows-latest)	2m 22s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 25s
checks / test (3.14, locked, windows-latest)	3m 35s
checks / test (3.14, lowest-direct, windows-latest)	2m 27s
checks / test (3.13, locked, ubuntu-latest)	51s
checks / test (3.12, locked, windows-latest)	3m 31s
all-green	5s
	40m 39s

Provide feedback