JSlider single-pin fix #1185

Job	Run time
call-node-workflow / build	49s
build (Pico)	3m 22s
build (AlpacaOwO)	3m 26s
build (BentoBox)	3m 23s
build (DURAL)	2m 47s
build (FightboardV3)	3m 25s
build (FightboardV3Mirrored)	2m 45s
build (FlatboxRev4)	3m 10s
build (FlatboxRev5)	3m 15s
build (FlatboxRev5RGB)	2m 46s
build (KB2040)	2m 48s
build (MavercadeKeebfighter)	3m 6s
build (PicoAnn)	2m 42s
build (PicoFightingBoard)	3m 22s
build (ReflexEncoder)	2m 40s
build (RP2040AdvancedBreakoutBoard)	2m 41s
build (RP2040MiniBreakoutBoard)	3m 36s
build (SparkFunProMicro)	2m 47s
build (WaveshareZero)	2m 42s
build (Stress)	2m 36s
	58m 8s

Provide feedback