fix compact_database parameter mode default value

Signed-off-by: peiyu <125331682@qq.com>

Author: sd4324530

paimon-flink/paimon-flink-common/src/main/java/org/apache/paimon/flink/action/CompactDatabaseAction.java

@@ -64,7 +64,7 @@ public class CompactDatabaseAction extends ActionBase {
     @Nullable private Pattern excludingPattern;
     private Pattern databasePattern = Pattern.compile(".*");
 
-    private MultiTablesSinkMode databaseCompactMode = MultiTablesSinkMode.DIVIDED;
+    private MultiTablesSinkMode databaseCompactMode = MultiTablesSinkMode.COMBINED;
 
     private final Map<String, FileStoreTable> tableMap = new HashMap<>();