[KYUUBI #5991] Error on reading Atlas properties composed of multi values

# 🔍 Description
## Issue References 🔗

This pull request fixes #

## Describe Your Solution 🔧

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

## Types of changes 🔖

- [x] Bugfix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing functionality to change)

## Test Plan 🧪

#### Behavior Without This Pull Request ⚰️

#### Behavior With This Pull Request 🎉

#### Related Unit Tests

---

# Checklist 📝

- [ ] This patch was not authored or co-authored using [Generative Tooling](https://www.apache.org/legal/generative-tooling.html)

**Be nice. Be informative.**

Closes #5993 from SwordyZhao/fix-issues-5991.

Closes #5991

827007d06 [swordy_zhao] run dev/reformat fix code style.
600363dd9 [swordy_zhao] delete scala.List,Convert a java.List to scala.List
7b000e94a [swordy_zhao] fix 5991--kyuubi failed to read atlas.rest.address
5de05764e [swordy_zhao] fix 5991--kyuubi failed to read atlas.rest.address

Authored-by: swordy_zhao <swordy_work@163.com>
Signed-off-by: Cheng Pan <chengpan@apache.org>

extensions/spark/kyuubi-spark-lineage/src/main/scala/org/apache/kyuubi/plugin/lineage/dispatcher/atlas/AtlasClientConf.scala

@@ -17,6 +17,10 @@
 
 package org.apache.kyuubi.plugin.lineage.dispatcher.atlas
 
+import java.util
+
+import scala.collection.JavaConverters._
+
 import org.apache.atlas.ApplicationProperties
 import org.apache.commons.configuration.Configuration
 import org.apache.spark.kyuubi.lineage.SparkContextHelper
@@ -26,7 +30,7 @@ class AtlasClientConf(configuration: Configuration) {
   def get(entry: ConfigEntry): String = {
     configuration.getProperty(entry.key) match {
       case s: String => s
-      case l: List[_] => l.mkString(",")
+      case jl: util.List[_] => jl.asScala.mkString(",")
       case o if o != null => o.toString
       case _ => entry.defaultValue
     }