[nrf fromlist] mcumgr: Prevent FW loader from self-destruction#3617

nordicjm merged 1 commit intonrfconnect:mainnrfconnect/sdk-zephyr:mainfrom

tomchy:bugfix/smp/NCSDK-36684_FW_loader_self_destruction_nrftomchy/sdk-zephyr:bugfix/smp/NCSDK-36684_FW_loader_self_destruction_nrfCopy head branch name to clipboard