Fix config_kls bug in SamplerHandlers #1610

Job	Run time
Build wheels (pt2.3.0, py3.10, linux-x86_64, cpu, nosan) / Build	4m 20s
Build wheels (pt2.5.1, py3.12, linux-x86_64, cpu, nosan) / Build	4m 13s
Build wheels (pt2.5.1, py3.12, linux-x86_64, cu118, nosan) / Build	5m 47s
Build wheels (pt2.5.1, py3.12, linux-x86_64, cu124, nosan) / Build	5m 48s
Build wheels (pt2.3.0, py3.10, macos-arm64) / Build	2m 23s
Build wheels (pt2.5.1, py3.12, macos-arm64) / Build	2m 19s
Build wheels (pt2.5.1, py3.12, macos-arm64) / Test	56s
Build wheels (pt2.3.0, py3.10, macos-arm64) / Test	52s
Build wheels (pt2.5.1, py3.12, linux-x86_64, cpu, nosan) / Test	17m 8s
Build wheels (pt2.3.0, py3.10, linux-x86_64, cpu, nosan) / Test	1m 48s
Build wheels (pt2.5.1, py3.12, linux-x86_64, cu118, nosan) / Test	13m 44s
Build wheels (pt2.5.1, py3.12, linux-x86_64, cu124, nosan) / Test	13m 22s
	1h 12m 40s

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