Merged branch idea243.release into idea243.x

scala/scala-impl/src/org/jetbrains/plugins/scala/codeInsight/intention/types/AddOnlyStrategy.scala

@@ -243,7 +243,7 @@ object AddOnlyStrategy {
     anchor match {
       case p: ScParameter =>
         val parameter = p.getParent match {
-          case Parent(Parent(Parent(_: ScBlockExpr))) => p
+          case Parent(Parent(Parent(block: ScBlockExpr))) if !block.isEnclosedByColon => p
           // ensure that the parameter is wrapped in parentheses before we add the type annotation.
           case clause: ScParameterClause if clause.parameters.length == 1 =>
             clause.replace(createClauseForFunctionExprFromText(p.getText.parenthesize(), clause))

scala/scala-impl/test/org/jetbrains/plugins/scala/codeInsight/intention/types/ToggleTypeAnnotationIntentionTest_Scala3.scala

@@ -46,4 +46,17 @@ final class ToggleTypeAnnotationIntentionTest_Scala3 extends ToggleTypeAnnotatio
        |}
        |""".stripMargin
   )
+
+  def testAddTypeToFewerBracesParameter(): Unit = doTest(
+    s"""
+       |class Example:
+       |  Seq(1, 2, 3).foreach: x$caretTag =>
+       |    println(x)
+       |""".stripMargin,
+    s"""
+       |class Example:
+       |  Seq(1, 2, 3).foreach: (x: Int)$caretTag =>
+       |    println(x)
+       |""".stripMargin,
+  )
 }