disable llext #711

Job	Run time
LP64-WIP	4m 4s
manifest-check	53s
build-windows (mtl lnl)	5m 44s
build-windows (imx8 imx8x imx8m imx8ulp)	8m 29s
build-windows (tgl tgl-h)	6m 5s
build-windows (ptl)	5m 14s
build-windows (-d, lnl)	5m 30s
build-linux (mnfst, imx8 imx8x imx8m imx8ulp)	6m 27s
build-linux (mnfst, ptl)	4m 4s
build-linux (zmain, imx8 imx8x imx8m imx8ulp)	6m 28s
build-linux (mnfst, tgl tgl-h)	4m 23s
build-linux (mnfst, mtl lnl)	4m 12s
build-linux (-d, mnfst, lnl)	5m 7s
build-linux (zmain, mtl lnl)	4m 14s
build-linux (zmain, ptl)	4m 10s
build-linux (zmain, tgl tgl-h)	4m 10s
build-linux (mnfst, --all)	4m 13s
compare-linux-win	1m 1s
	1h 24m 28s

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