[SYS] Remove handleJsonQueue wrapper and use std::string (#2038)

Co-authored-by: Florian <1technophile@users.noreply.github.com>

main/ZsensorHCSR04.ino

@@ -69,7 +69,7 @@ void MeasureDistance() {
         Log.trace(F("HC SR04 Distance hasn't changed" CR));
       }
       distance = d;
-      handleJsonEnqueue(HCSR04data);
+      enqueueJsonObject(HCSR04data);
     }
   }
 }