tests: fix the bug of sentinel.conf
tests: fix the bug of sentinel.conf

Even CONFIG_HW_STACK_PROTECTION is no here,
it is still yes as it will be re-selected by
CONFIG_TEST_HW_STACK_PROTECTION in tests/Kconfig.

So the correct setting here is:

CONFIG_TEST_HW_STACK_PROTECTION=n

This fixes #8092 (case1)

Signed-off-by: Wayne Ren <d5c6d7c4aa45e53f819f17870783d153a32ba7d0@synopsys.com>

punitvara/zephyr,nashif/zephyr,punitvara/zephyr,ldts/zephyr,Vudentz/zephyr,kraj/zephyr,finikorg/zephyr,finikorg/zephyr,mbolivar/zephyr,nashif/zephyr,ldts/zephyr,galak/zephyr,GiulianoFranchetto/zephyr,finikorg/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,punitvara/zephyr,galak/zephyr,punitvara/zephyr,kraj/zephyr,mbolivar/zephyr,GiulianoFranchetto/zephyr,finikorg/zephyr,zephyriot/zephyr,punitvara/zephyr,kraj/zephyr,zephyriot/zephyr,explora26/zephyr,galak/zephyr,mbolivar/zephyr,galak/zephyr,Vudentz/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,explora26/zephyr,nashif/zephyr,GiulianoFranchetto/zephyr,kraj/zephyr,mbolivar/zephyr,explora26/zephyr,Vudentz/zephyr,GiulianoFranchetto/zephyr,GiulianoFranchetto/zephyr,ldts/zephyr,kraj/zephyr,nashif/zephyr,explora26/zephyr,zephyriot/zephyr,ldts/zephyr,zephyriot/zephyr,galak/zephyr,explora26/zephyr,Vudentz/zephyr,zephyriot/zephyr,nashif/zephyr,mbolivar/zephyr,ldts/zephyr