NRF_SDH_BLE_OBSERVER Why Not Run

It appears that "NRF_SDH_BLE_OBSERVER" will not be run. Why?

This project ↓

"\examples\ble_central_and_peripheral\experimental\ble_app_hrs_rscs_relay\pca10056\s140\arm5_no_packs\ble_app_hrs_rscs_relay_pca10056_s140.uvprojx/main.c"

SDK: 17
IDE: Keil
SoftDevice: 7.2
Computer platform: Windows 11
Device: nRF52840 Dongle

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