idc: zephyr: fix race between IDC p4wq worker and new msg submission #167

Job	Run time
manifest-check	37s
LP64-WIP	2m 56s
build-windows (imx8 imx8x imx8m)	7m 6s
build-linux (mnfst, imx8 imx8x imx8m)	4m 33s
build-windows (mtl)	5m 6s
build-linux (mnfst, mtl)	3m 39s
build-windows (tgl tgl-h)	5m 11s
build-linux (mnfst, lnl)	3m 20s
build-windows (-d, mtl)	5m 21s
build-linux (mnfst, tgl tgl-h)	3m 8s
build-linux (zmain, imx8 imx8x imx8m)	4m 8s
build-linux (zmain, mtl)	2m 58s
build-linux (zmain, lnl)	2m 52s
build-linux (zmain, tgl tgl-h)	3m 21s
build-linux (-d, mnfst, mtl)	3m 16s
compare-linux-win	22s
	57m 54s

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