kmod-nft-nat6 error upgrading from 22.03.0-rc6 to 22.03 using Linksys E8450 (UBI)

Error building the firmware image
Server response: Unsupported package(s): kmod-nft-nat6

Please report the error message and request
Request Data:

{
"url": "https://sysupgrade.openwrt.org",
"revision": "r19590-042d558536",
"advanced_mode": "0",
"branch": "22.03",
"efi": null,
"profile": "linksys,e8450-ubi",
"target": "mediatek/mt7622",
"version": "22.03.0",
"packages": [
"auc",
"base-files",
"busybox",
"ca-bundle",
"cgi-io",
"dnsmasq",
"dropbear",
"firewall4",
"fstools",
"fwtool",
"getrandom",
"hostapd-common",
"iperf3",
"iptables-nft",
"iw",
"iwinfo",
"jansson",
"jshn",
"jsonfilter",
"kernel",
"kmod-cfg80211",
"kmod-crypto-aead",
"kmod-crypto-ccm",
"kmod-crypto-cmac",
"kmod-crypto-crc32c",
"kmod-crypto-ctr",
"kmod-crypto-gcm",
"kmod-crypto-gf128",
"kmod-crypto-ghash",
"kmod-crypto-hash",
"kmod-crypto-hmac",
"kmod-crypto-manager",
"kmod-crypto-null",
"kmod-crypto-rng",
"kmod-crypto-seqiv",
"kmod-crypto-sha256",
"kmod-gpio-button-hotplug",
"kmod-hwmon-core",
"kmod-leds-gpio",
"kmod-lib-crc-ccitt",
"kmod-lib-crc32c",
"kmod-mac80211",
"kmod-mt76-connac",
"kmod-mt76-core",
"kmod-mt7615-common",
"kmod-mt7615-firmware",
"kmod-mt7615e",
"kmod-mt7915e",
"kmod-nf-conntrack",
"kmod-nf-conntrack6",
"kmod-nf-flow",
"kmod-nf-log",
"kmod-nf-log6",
"kmod-nf-nat",
"kmod-nf-nat6",
"kmod-nf-reject",
"kmod-nf-reject6",
"kmod-nfnetlink",
"kmod-nft-core",
"kmod-nft-fib",
"kmod-nft-nat",
"kmod-nft-nat6",
"kmod-nft-offload",
"kmod-ppp",
"kmod-pppoe",
"kmod-pppox",
"kmod-slhc",
"kmod-usb3",
"libblobmsg-json",
"libiwinfo",
"libiwinfo-data",
"libiwinfo-lua",
"libjson-c",
"libjson-script",
"liblua",
"liblucihttp",
"liblucihttp-lua",
"libmnl",
"libnftnl",
"libnl-tiny",
"libubox",
"libubus",
"libubus-lua",
"libuci",
"libuclient",
"libucode",
"libustream-wolfssl",
"libwolfssl",
"logd",
"lua",
"luci",
"luci-app-attendedsysupgrade",
"luci-app-firewall",
"luci-app-https-dns-proxy",
"luci-app-opkg",
"luci-base",
"luci-lib-base",
"luci-lib-ip",
"luci-lib-jsonc",
"luci-lib-nixio",
"luci-mod-admin-full",
"luci-mod-network",
"luci-mod-status",
"luci-mod-system",
"luci-proto-ipv6",
"luci-proto-ppp",
"luci-ssl",
"luci-theme-bootstrap",
"mtd",
"netifd",
"nftables-json",
"odhcp6c",
"odhcpd-ipv6only",
"openwrt-keyring",
"opkg",
"ppp",
"ppp-mod-pppoe",
"procd",
"procd-seccomp",
"procd-ujail",
"px5g-wolfssl",
"rpcd",
"rpcd-mod-file",
"rpcd-mod-iwinfo",
"rpcd-mod-luci",
"rpcd-mod-rrdns",
"tailscale",
"ubi-utils",
"uboot-envtools",
"ubox",
"ubus",
"ubusd",
"uci",
"uclient-fetch",
"ucode",
"ucode-mod-fs",
"ucode-mod-ubus",
"ucode-mod-uci",
"uhttpd",
"uhttpd-mod-ubus",
"urandom-seed",
"urngd",
"usign",
"vim",
"wireless-regdb",
"wpad-basic-wolfssl"
],
"diff_packages": true,
"filesystem": "squashfs",
"client": "luci/git-22.210.54153-69231a7"
}

Start with the reported server response from https://sysupgrade.openwrt.org and the included request data for the linksys,e8450-ubi profile on the 22.03 branch. Trace how the server handles the kmod-nft-nat6 package and determine why it is reported as unsupported; done means the firmware image request completes without that error.