[#6523] fix(core): Filter null prop when init properties

Author: teo

core/src/main/java/org/apache/gravitino/catalog/EntityCombinedFileset.java

@@ -77,6 +77,7 @@ public String storageLocation() {
   public Map<String, String> properties() {
     return fileset.properties().entrySet().stream()
         .filter(p -> !hiddenProperties.contains(p.getKey()))
+        .filter(entry -> entry.getKey() != null && entry.getValue() != null)
         .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
   }
 

core/src/main/java/org/apache/gravitino/catalog/EntityCombinedTable.java

@@ -96,6 +96,7 @@ public Column[] columns() {
   public Map<String, String> properties() {
     return table.properties().entrySet().stream()
         .filter(p -> !hiddenProperties.contains(p.getKey()))
+        .filter(entry -> entry.getKey() != null && entry.getValue() != null)
         .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
   }
 

core/src/main/java/org/apache/gravitino/catalog/EntityCombinedTopic.java

@@ -84,6 +84,7 @@ public String comment() {
   public Map<String, String> properties() {
     return topic.properties().entrySet().stream()
         .filter(p -> !hiddenProperties.contains(p.getKey()))
+        .filter(entry -> entry.getKey() != null && entry.getValue() != null)
         .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
   }