vregion: replace error messages with warnings #22866

Job	Run time
LP64-WIP	4m 36s
build-linux (mnfst, wcl imx95)	7m 28s
manifest-check	3m 15s
build-windows (mnfst, imx8m imx8ulp)	9m 27s
build-windows (mnfst, mtl)	8m 49s
build-windows (mnfst, tgl-h)	10m 52s
build-windows (mnfst, imx8 imx8x)	11m 1s
build-linux (mnfst, tgl)	4m 48s
build-linux (mnfst, mtl)	4m 34s
build-linux (mnfst, tgl-h)	4m 39s
build-windows (mnfst, lnl)	9m 50s
build-windows (mnfst, tgl)	8m 21s
build-linux (mnfst, lnl)	4m 39s
build-linux (-d, mnfst, lnl)	4m 58s
build-linux (mnfst, imx8 imx8x)	5m 17s
build-windows (-d, mnfst, lnl)	9m 35s
build-linux (mnfst, imx8m imx8ulp)	4m 52s
build-linux (mnfst, ptl)	6m 12s
build-windows (mnfst, ptl)	9m 53s
compare-linux-win	32s
	2h 13m 38s

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