[PR] [SPARK-45717][YARN] Avoid use `spark.yarn.user.classpath.first` [spark]

["cxzl25 (via GitHub)" <gi...@apache.org>]

cxzl25 opened a new pull request, #43579:
URL: https://github.com/apache/spark/pull/43579

   ### What changes were proposed in this pull request?
   Use `spark.driver.userClassPathFirst` instead of `spark.yarn.user.classpath.first`.
   
   ### Why are the changes needed?
   When we set `spark.yarn.user.classpath.first=true`, we get the following message.
   ```
   23/10/30 14:32:16.855 pool-1-thread-1-ScalaTest-running-ClientSuite 
   WARN SparkConf: The configuration key 'spark.yarn.user.classpath.first' has been deprecated as of Spark 1.3 and may be removed in the future. Please use spark.{driver,executor}.userClassPathFirst instead. 
   ```
   ### Does this PR introduce _any_ user-facing change?
   No
   
   ### How was this patch tested?
   exist UT
   
   
   ### Was this patch authored or co-authored using generative AI tooling?
   No


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