default or selected kernelversion does not have config value CONFIG_NF_NAT_IPV4.
Result is shown for kernelversion 6.9.5


modulename: nf_nat_ipv4.ko

configname: CONFIG_NF_NAT_IPV4

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Network packet filtering framework (Netfilter)
└─>IP: Netfilter Configuration
└─>IPv4 NAT
In linux kernel since version 3.1 (release Date: 2011-10-24)  
The IPv4 NAT option allows masquerading, port forwarding and other
forms of full Network Address Port Translation. This can be
controlled by iptables or nft.

source code: