samples:wireless:ot: Disable autostart feature for openthread nxp_ot_cli sample

Disable Openthread autostart since it impacts certification tests

Signed-off-by: nxf84427 <[email protected]>

Author: JA-NXP

samples/wireless/nxp_ot_cli/prj.conf

@@ -43,6 +43,7 @@ CONFIG_NET_PKT_TXTIME=y
 # Enable Openthread host rcp
 CONFIG_OPENTHREAD_HDLC_RCP=y
 CONFIG_HDLC_RCP_IF=y
+CONFIG_OPENTHREAD_MANUAL_START=y
 
 # Enable OpenThread features set
 CONFIG_OPENTHREAD_THREAD_VERSION_1_3=y