default or selected kernelversion does not have config value CONFIG_VIDEO_NOMODESET.
Result is shown for kernelversion 6.9.9

CONFIG_VIDEO_NOMODESET (not configurable)

modulename: nomodeset.ko

configname: CONFIG_VIDEO_NOMODESET

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>VIDEO_NOMODESET
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
source code:
drivers/video/nomodeset.c