Merge remote-tracking branch 'luispereira106/fix-pss-corr-metrics' into integration_2026_w28

Fix PSS correlation peak value and average value on the OAI UE logs (#274)

These metrics are very helpful to properly adjust the USRP gains on the OAI UE. There was a regression in the code, this commit just gets it showing properly again.

Current develop:

    [NR_PHY] Starting sync detection
    [PHY]    [UE thread Synch] Running Initial Synch
    [NR_PHY] Starting cell search with center freq: 3619200000, bandwidth: 106. Scanning for 1 number of GSCN.
    [NR_PHY] Scanning GSCN: 0, with SSB offset: 516, SSB Freq: 0.000000
    [PHY]    Initial sync: pbch decoded sucessfully, ssb index 0
    [PHY]    pbch rx ok. rsrp:51 dB/RE, adjust_rxgain:-1 dB
    [NR_PHY] Cell Detected with GSCN: 0, SSB SC offset: 516, SSB Ref: 0.000000, PSS Corr peak: 0 dB, PSS Corr Average: 0

This PR:

    [PHY]    SSB position provided
    [NR_PHY] Starting sync detection
    [PHY]    [UE thread Synch] Running Initial Synch
    [NR_PHY] Starting cell search with center freq: 3619200000, bandwidth: 106. Scanning for 1 number of GSCN.
    [NR_PHY] Scanning GSCN: 0, with SSB offset: 516, SSB Freq: 0.000000
    [PHY]    Initial sync: pbch decoded sucessfully, ssb index 0
    [PHY]    pbch rx ok. rsrp:51 dB/RE, adjust_rxgain:-1 dB
    [NR_PHY] Cell Detected with GSCN: 0, SSB SC offset: 516, SSB Ref: 0.000000, PSS Corr peak: 99 dB, PSS Corr Average: 61
Reviewed-by: Sakthivel Velumani <s.velumani@northeastern.edu>

openair1/PHY/NR_UE_TRANSPORT/nr_initial_sync.c

@@ -332,6 +332,8 @@ static void nr_scan_ssb(void *arg)
       continue;
     }
 
+    ssbInfo->pssCorrAvgPower = search_params.pss_res.avg;
+    ssbInfo->pssCorrPeakPower = search_params.pss_res.peak;
     ssbInfo->ssbOffset = search_params.pss_res.pos - search_params.nb_prefix_samples;
     ssbInfo->nidCell = search_params.sss_res.nid_cell;