[python] add support for clientDefaultValue to unblock CI #5823

Job	Run time
Detect Changes	14s
core / Docker Build	1m 22s
core / E2E Tests	11m 59s
core / Build (windows-latest, Node 22.x)	17m 3s
core / Build (windows-latest, Node 24.x)	15m 13s
core / Build (ubuntu-latest, Node 24.x)	9m 35s
core / Build (ubuntu-latest, Node 22.x)	11m 37s
core / Website	7m 1s
CI Gate	3s
	1h 14m 7s

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