Only log good times. (It's not always a good time then) (#7904)

Further to https://github.com/meshtastic/firmware/pull/7897 ,
there was another log line that was triggering indiscriminantly on
GPS_INTERVAL_THRESHOLD .

Rather than logging a bad time 4000 times, let's just log one good time
when it is set.

src/gps/GPS.cpp

@@ -1532,10 +1532,9 @@ The Unix epoch (or Unix time or POSIX time or Unix timestamp) is the number of s
         t.tm_year = d.year() - 1900;
         t.tm_isdst = false;
         if (t.tm_mon > -1) {
-            LOG_DEBUG("NMEA GPS time %02d-%02d-%02d %02d:%02d:%02d age %d", d.year(), d.month(), t.tm_mday, t.tm_hour, t.tm_min,
-                      t.tm_sec, ti.age());
             if (perhapsSetRTC(RTCQualityGPS, t) == RTCSetResultSuccess) {
-                LOG_DEBUG("Time set.");
+                LOG_DEBUG("NMEA GPS time set %02d-%02d-%02d %02d:%02d:%02d age %d", d.year(), d.month(), t.tm_mday, t.tm_hour,
+                          t.tm_min, t.tm_sec, ti.age());
                 return true;
             } else {
                 return false;