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

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

main/ZsensorBH1750.ino

@@ -101,7 +101,7 @@ void MeasureLightIntensity() {
         Log.trace(F("Same wattsm2 don't send it" CR));
       }
       BH1750data["origin"] = subjectBH1750toMQTT;
-      handleJsonEnqueue(BH1750data);
+      enqueueJsonObject(BH1750data);
     }
     persistedll = Lux;
     persistedlf = ftcd;