[SPARK-48466][SQL][FOLLOWUP] Fix missing pattern match in EmptyRelati…

…onExec

### What changes were proposed in this pull request?

Fixed a missing pattern match introduced in #46830

Sorry for the silly mistake...

### Why are the changes needed?

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

### How was this patch tested?
Existing tests

### Was this patch authored or co-authored using generative AI tooling?
NO

Closes #47089 from liuzqt/SPARK-48466.

Authored-by: Ziqi Liu <ziqi.liu@databricks.com>
Signed-off-by: Gengliang Wang <gengliang@apache.org>

sql/core/src/main/scala/org/apache/spark/sql/execution/EmptyRelationExec.scala

@@ -86,6 +86,7 @@ case class EmptyRelationExec(@transient logical: LogicalPlan) extends LeafExecNo
     logical.foreach {
       case LogicalQueryStage(_, physical) =>
         physical.cleanupResources()
+      case _ =>
     }
     super.cleanupResources()
   }