Avoid calling SkiaLayer.revalidate() when the window itself is moved.

[m-sasha]

Calling SkiaLayer.revalidate() when the window moves causes unnecessary layout and repainting.
This PR makes sure to only call it when the actual position of the layer in the window changes.

[m-sasha]

I still need to verify that it doesn't break what #988 was fixing.

[m-sasha]

The following may be a suitable reproducer of the issue originally fixed in #988

@OptIn(ExperimentalFoundationApi::class)
fun main() = SwingUtilities.invokeAndWait {
    JFrame("Compose Test").also {
        it.size = Dimension(800, 700)
        val panel = JPanel()
        it.contentPane.add(panel)
        it.contentPane.layout = null
        panel.setSize(400, 300)
        panel.setBounds(100, 100, 400, 500)
        val composePanel = ComposePanel()
        composePanel.setSize(400, 300)
        composePanel.apply {
            setContent {
                Column(Modifier.size(400.dp, 500.dp)) {
                    Box(
                        Modifier
                            .size(400.dp, 200.dp)
                            .background(Color.Red)
                            .onClick {
                                panel.location = panel.location.let { l -> Point(l.x + 20, l.y + 20) }
                                println("Moving")
                            }
                    )
                    Box(
                        Modifier
                            .size(400.dp, 200.dp)
                            .background(Color.Blue)
                            .onClick {
                                composePanel.size = composePanel.size.let { s -> Dimension(s.width + 1, s.height + 1) }
                                println("Resizing")
                            }
                    )
                }
            }
        }
        panel.add(composePanel)
        it.isVisible = true
    }
}

Clicking the red rectangle should move the whole thing by 20 pixels down and to the right. If we remove the AncestorListener from SkiaLayer.awt.kt altogether, then it doesn't move (clicking the blue rectangle causes it to redraw at the correct location).
With the version in this PR, it appears to work correctly when clicking the red part.

[igordmn]

Rechecked https://youtrack.jetbrains.com/issue/CMP-5856/Desktop-ComposePanel-size-breaks-with-.fillMax-modifiers#focus=Comments-27-10632441.0-0 - still doesn't reproduce

(after commenting validate() - it reproduces)