default or selected kernelversion does not have config value CONFIG_ANDROID_LOW_MEMORY_KILLER.
Result is shown for kernelversion 6.2-rc6

Android Low Memory Killer

modulename: lowmemorykiller.ko

Linux Kernel Configuration
└─> Device Drivers
└─> Staging drivers
└─> Android
└─> Android Low Memory Killer

Registers processes to be killed when low memory conditions, this is useful
as there is no particular swap space on android.

The registered process will kill according to the priorities in android init
scripts (/init.rc), and it defines priority values with minimum free memory size
for each priority.

source code: