Implement thread-isolated connection pooling (BoundedReaderPool) in ArrayRecordDataSource to support safe concurrent reads. #549

Job	Run time
call-workflow / Python 3.12 on ubuntu-22.04	4m 20s
call-workflow / Python 3.14 on ubuntu-22.04	6m 50s
call-workflow / Python 3.11 on macos-14	3m 14s
call-workflow / Python 3.12 on ubuntu-22.04-arm	8m 33s
call-workflow / Python 3.12 on macos-14	2m 28s
call-workflow / Python 3.14 on ubuntu-22.04-arm	4m 18s
call-workflow / Python 3.11 on ubuntu-22.04	9m 18s
call-workflow / Python 3.13 on ubuntu-22.04	3m 50s
call-workflow / Python 3.11 on ubuntu-22.04-arm	4m 52s
call-workflow / Python 3.14 on macos-14	3m 22s
call-workflow / Python 3.13 on ubuntu-22.04-arm	3m 47s
call-workflow / Python 3.13 on macos-14	2m 31s
call-workflow / publish-wheel	0s
	57m 23s

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