ui: restore backward compatibility

GitOrigin-RevId: 87cc1729c3ff160dae6c9016f96521841c7ae808

platform/collaboration-tools/src/com/intellij/collaboration/ui/icon/OverlaidOffsetIconsIcon.kt

@@ -0,0 +1,9 @@
+// Copyright 2000-2023 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+package com.intellij.collaboration.ui.icon
+
+import com.intellij.ui.OverlaidOffsetIconsIcon
+import javax.swing.Icon
+
+@Deprecated("Use com.intellij.ui.OverlaidOffsetIconsIcon instead")
+class OverlaidOffsetIconsIcon(icons: List<Icon>, offsetRate: Float = 0.4f) : OverlaidOffsetIconsIcon(icons, offsetRate) {
+}

platform/core-ui/src/ui/OverlaidOffsetIconsIcon.kt

@@ -3,6 +3,7 @@ package com.intellij.ui
 
 import com.intellij.util.ui.ImageUtil
 import com.intellij.util.ui.StartupUiUtil
+import org.jetbrains.annotations.ApiStatus
 import java.awt.AlphaComposite
 import java.awt.Component
 import java.awt.Graphics
@@ -16,7 +17,8 @@ import kotlin.math.roundToInt
  * Paints [icons] in a stack - one over the other with a slight offset
  * Assumes that icons all have the same size
  */
-class OverlaidOffsetIconsIcon(
+@ApiStatus.NonExtendable
+open class OverlaidOffsetIconsIcon(
   private val icons: List<Icon>,
   private val offsetRate: Float = 0.4f
 ) : Icon {