nvl: disable GDB stub until fixed in Zephyr #22186

Job	Run time
manifest-check	3m 28s
LP64-WIP	4m 11s
build-windows (ptl)	11m 14s
build-windows (mtl lnl)	13m 35s
build-windows (-d, lnl)	10m 58s
build-windows (imx8 imx8x imx8m imx8ulp)	13m 28s
build-linux (mnfst, imx8 imx8x imx8m imx8ulp)	7m 21s
build-linux (mnfst, mtl lnl)	6m 30s
build-linux (mnfst, tgl tgl-h)	5m 59s
build-linux (zmain, imx8 imx8x imx8m imx8ulp)	6m 30s
build-windows (tgl tgl-h)	12m 2s
build-linux (zmain, mtl lnl)	6m 31s
build-linux (zmain, tgl tgl-h)	5m 29s
build-linux (mnfst, wcl imx95)	7m 7s
build-linux (-d, mnfst, lnl)	5m 11s
build-linux (mnfst, ptl)	5m 41s
build-linux (zmain, ptl)	5m 39s
compare-linux-win	30s
	2h 11m 24s

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