The code logic of the configmap max size validation lacks extra content

In each configmap, Spark adds an extra content in a fixed format,this extra content of the configmap is as belows:
  spark.kubernetes.namespace: default
  spark.properties: |
    #Java properties built from Kubernetes config map with name: spark-exec-b47b438630eec12d-conf-map
    #Wed Feb 08 20:10:19 CST 2023
    spark.kubernetes.namespace=default

But the max size validation code logic does not consider this part