[2.x] clean task cleans sona-staging (#9479)

**Problem/Solution**
1. clean task cleans sona-staging directory.
2. cleanFull calls clean task.

main/src/main/scala/sbt/Defaults.scala

@@ -760,6 +760,7 @@ object Defaults extends BuildCommon with DefExtra {
           case NonFatal(_) => ()
         }
         clean.value
+        (ThisBuild / publish / clean).value
       },
       scalaCompilerBridgeBin := Def
         .ifS(Def.task {

main/src/main/scala/sbt/internal/Clean.scala

@@ -218,6 +218,7 @@ private[sbt] object Clean {
     val h = Help.more(CleanFull, cleanFullDetailed)
     val expunge: State => State =
       (s: State) =>
+        import UpperStateOps.*
         val outputDirectory = s
           .get(BasicKeys.rootOutputDirectory)
           .getOrElse(sys.error("outputDirectory has not been set"))
@@ -225,6 +226,7 @@ private[sbt] object Clean {
         cacheStore.foreach:
           case d: DiskActionCacheStore => d.clear()
           case _                       => ()
+        val s2 = s.unsafeRunAggregated(LocalRootProject / clean)
         IO.delete(outputDirectory.toFile())
         IO.delete(
           s.configuration

main/src/main/scala/sbt/plugins/IvyPlugin.scala

@@ -10,6 +10,9 @@ package sbt
 package plugins
 
 import Def.Setting
+import Keys.*
+import sbt.io.IO
+import sbt.io.syntax.*
 
 /**
  * Plugin that enables resolving artifacts via ivy.
@@ -29,6 +32,13 @@ object IvyPlugin extends AutoPlugin {
 
   override lazy val globalSettings: Seq[Setting[?]] =
     Defaults.globalIvyCore
+  override lazy val buildSettings: Seq[Setting[?]] =
+    Seq(
+      publish / clean := Def.uncached {
+        IO.delete(stagingDirectory.value)
+        IO.delete((ThisBuild / baseDirectory).value / "target" / "sona-bundle")
+      },
+    )
   override lazy val projectSettings: Seq[Setting[?]] =
     Classpaths.ivyPublishSettings ++ Classpaths.ivyBaseSettings
 

sbt-app/src/sbt-test/actions/clean-sona-staging/build.sbt

@@ -0,0 +1 @@
+name := "clean-sona-staging"

sbt-app/src/sbt-test/actions/clean-sona-staging/test

@@ -0,0 +1,7 @@
+$ touch target/sona-staging/dummy.txt
+$ touch target/sona-bundle/dummy.txt
+
+> clean
+
+$ absent target/sona-staging/dummy.txt
+$ absent target/sona-bundle/dummy.txt