default or selected kernelversion does not have config value CONFIG_IOSCHED_CFQ.
Result is shown for kernelversion 6.7.7

CFQ I/O scheduler

modulename: cfq-iosched.ko

configname: CONFIG_IOSCHED_CFQ

Linux Kernel Configuration
└─>Enable the block layer
└─>IO Schedulers
└─>CFQ I/O scheduler
In linux kernel since version 2.6.15 (release Date: 2006-01-02)  
The CFQ I/O scheduler tries to distribute bandwidth equally
among all processes in the system. It should provide a fair
and low latency working environment, suitable for both desktop
and server systems.

This is the default I/O scheduler.

source code:
depends
CONFIG_BLOCK