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Remove SSPU/SSPV provision (SkuSiPolicyUpdateSigners/SkuSiPolicyVersion) since setting SkuSiPolicyVersion effectively prevents regular Windows installation media from booting unless you boot it with Secure Boot disabled at least once and SkuSiPolicyUpdateSigners is not interchangeable between systems in the first place.
See KB5042562 on how you can apply Microsoft's UEFI lock on your own, by copying SkuSiPolicy.p7b to the ESP, after understanding that doing so may result in Windows boot media fail to boot on your system without providing any hint as to why it isn't booting, and why this might continue to be the case even after you remove the existing Windows instance.