[SPARK-44074][CORE][SQL][TESTS] Fix loglevel restore behavior of `Spa…

…rkFunSuite#withLogAppender` and re-enable UT `Logging plan changes for execution`

### What changes were proposed in this pull request?
The main change of this pr is to add a call of `SparkFunSuite#wupdateLoggers` after restore loglevel when 'level' of `withLogAppender` function is not `None`, and under the premise of this change, the UT `Logging plan changes for execution` disabled in #41638 can be re-enabled.

### Why are the changes needed?
- Fix bug of `SparkFunSuite#withLogAppender` when 'level' is not None
- Re-enable UT `Logging plan changes for execution`

### Does this PR introduce _any_ user-facing change?
No

### How was this patch tested?
- Pass GitHub Actions
- Manual test

```
build/sbt "sql/testOnly org.apache.spark.sql.JoinHintSuite org.apache.spark.sql.execution.QueryExecutionSuite"
```

**Before**

```
[info] - Logging plan changes for execution *** FAILED *** (36 milliseconds)
[info]   testAppender.loggingEvents.exists(((x$10: org.apache.logging.log4j.core.LogEvent) => x$10.getMessage().getFormattedMessage().contains(expectedMsg))) was false (QueryExecutionSuite.scala:232)
[info]   org.scalatest.exceptions.TestFailedException:
[info]   at org.scalatest.Assertions.newAssertionFailedException(Assertions.scala:472)
[info]   at org.scalatest.Assertions.newAssertionFailedException$(Assertions.scala:471)
[info]   at org.scalatest.Assertions$.newAssertionFailedException(Assertions.scala:1231)
[info]   at org.scalatest.Assertions$AssertionsHelper.macroAssert(Assertions.scala:1295)
[info]   at org.apache.spark.sql.execution.QueryExecutionSuite.$anonfun$new$34(QueryExecutionSuite.scala:232)
[info]   at scala.collection.immutable.List.foreach(List.scala:431)
[info]   at org.apache.spark.sql.execution.QueryExecutionSuite.$anonfun$new$31(QueryExecutionSuite.scala:231)
[info]   at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
[info]   at org.scalatest.OutcomeOf.outcomeOf(OutcomeOf.scala:85)
[info]   at org.scalatest.OutcomeOf.outcomeOf$(OutcomeOf.scala:83)
[info]   at org.scalatest.OutcomeOf$.outcomeOf(OutcomeOf.scala:104)
[info]   at org.scalatest.Transformer.apply(Transformer.scala:22)
...

```

The failure reason is `withLogAppender(hintAppender, level = Some(Level.WARN))` used in `JoinHintSuite`, but `SparkFunSuite#wupdateLoggers` doesn't have the correct restore Loglevel.

The test was successful before SPARK-44034 due to there was `AdaptiveQueryExecSuite` between `JoinHintSuite` and `QueryExecutionSuite`, and `AdaptiveQueryExecSuite` called `withLogAppender(hintAppender, level = Some(Level.DEBUG))`, but `AdaptiveQueryExecSuite` move to `slow sql` test group after SPARK-44034

**After**

```
[info] Run completed in 7 seconds, 485 milliseconds.
[info] Total number of tests run: 32
[info] Suites: completed 2, aborted 0
[info] Tests: succeeded 32, failed 0, canceled 0, ignored 0, pending 0
[info] All tests passed.
```

Closes #41663 from LuciferYang/SPARK-44074.

Authored-by: yangjie01 <yangjie01@baidu.com>
Signed-off-by: Dongjoon Hyun <dongjoon@apache.org>

core/src/test/scala/org/apache/spark/SparkFunSuite.scala

@@ -297,6 +297,7 @@ abstract class SparkFunSuite
           logger.asInstanceOf[Logger].setLevel(restoreLevels(i))
           logger.asInstanceOf[Logger].get().setLevel(restoreLevels(i))
         }
+        LogManager.getContext(false).asInstanceOf[LoggerContext].updateLoggers()
       }
     }
   }

sql/core/src/test/scala/org/apache/spark/sql/execution/QueryExecutionSuite.scala

@@ -220,8 +220,7 @@ class QueryExecutionSuite extends SharedSparkSession {
     assertNoTag(tag5, df.queryExecution.sparkPlan)
   }
 
-  // TODO(SPARK-44074): re-enable this test after SPARK-44074 resolved
-  ignore("Logging plan changes for execution") {
+  test("Logging plan changes for execution") {
     val testAppender = new LogAppender("plan changes")
     withLogAppender(testAppender) {
       withSQLConf(SQLConf.PLAN_CHANGE_LOG_LEVEL.key -> "INFO") {