No prj.conf file was found in the C:/ncs/v2.5.2/nrf/samples/caf_prj folder on ncs v2.5.2

I put prj.conf files under C:\ncs\v2.5.2\nrf\samples\caf_prj\configuration\nrf5340dk_nrf5340_cpuapp folder. But west build failed with the following messages.

C:\ncs\v2.5.2\nrf\samples\caf_prj>west build -b nrf5340dk_nrf5340_cpuapp
-- west build: generating a build system
Loading Zephyr default modules (Zephyr base).
-- Application: C:/ncs/v2.5.2/nrf/samples/caf_prj
-- CMake version: 3.20.5
-- Using NCS Toolchain 2.5.20231017.848171396279 for building. (C:/ncs/toolchains/c57af46cb7/cmake)
CMake Deprecation Warning at C:/ncs/v2.5.2/zephyr/cmake/modules/FindDeprecated.cmake:121 (message):
  'PYTHON_PREFER' variable is deprecated.  Please use Python3_EXECUTABLE
  instead.
Call Stack (most recent call first):
  C:/ncs/v2.5.2/zephyr/cmake/modules/python.cmake:16 (find_package)
  C:/ncs/v2.5.2/zephyr/cmake/modules/zephyr_default.cmake:129 (include)
  C:/ncs/v2.5.2/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:66 (include)
  C:/ncs/v2.5.2/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:92 (include_boilerplate)
  CMakeLists.txt:8 (find_package)


-- Found Python3: C:/ncs/toolchains/c57af46cb7/opt/bin/python.exe (found suitable version "3.8.2", minimum required is "3.8") found components: Interpreter
-- Cache files will be written to: C:/ncs/v2.5.2/zephyr/.cache
-- Zephyr version: 3.4.99 (C:/ncs/v2.5.2/zephyr)
-- Found west (found suitable version "1.1.0", minimum required is "0.14.0")
-- Board: nrf5340dk_nrf5340_cpuapp
CMake Error at C:/ncs/v2.5.2/zephyr/cmake/modules/configuration_files.cmake:78 (message):
  No prj.conf file was found in the C:/ncs/v2.5.2/nrf/samples/caf_prj folder,
  please read the Zephyr documentation on application development.
Call Stack (most recent call first):
  C:/ncs/v2.5.2/zephyr/cmake/modules/zephyr_default.cmake:129 (include)
  C:/ncs/v2.5.2/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:66 (include)
  C:/ncs/v2.5.2/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:92 (include_boilerplate)
  CMakeLists.txt:8 (find_package)


-- Configuring incomplete, errors occurred!
FATAL ERROR: command exited with status 1: 'C:\ncs\toolchains\c57af46cb7\opt\bin\cmake.EXE' -DWEST_PYTHON=C:/ncs/toolchains/c57af46cb7/opt/bin/python.exe '-BC:\ncs\v2.5.2\nrf\samples\caf_prj\build' -GNinja -DBOARD=nrf5340dk_nrf5340_cpuapp '-SC:\ncs\v2.5.2\nrf\samples\caf_prj'

Procedures to reproduce this issue are as follows.

1. Unzipping caf_prj.zip to C:\ncs\v2.5.2\nrf\samples folder

2. cd C:\ncs\v2.5.2\nrf\samples\caf_prj

3. west build -b nrf5340dk_nrf5340_cpuapp

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