Use JBR API to implement WindowDraggableArea when possible

[m-sasha]

Implement WindowDraggableArea via JBR API when available to improve (typically) undecorated window dragging experience on Linux.

Trying on Ubuntu 24.04:

• Windows snap to screen edges.
• Windows can be dragged (partially) outside the screen.
• Windows can be made full-screen by dragging them to the top of the screen.

Fixes https://youtrack.jetbrains.com/issue/CMP-7793/Use-JBR-API-in-WindowDraggableArea-on-Linux

Testing

Tested on Ubuntu 24.04 with

fun main() = singleWindowApplication(
    undecorated = true
) {
    MaterialTheme(
        colors = if (isSystemInDarkTheme()) darkColors() else lightColors()
    ) {
        Column(Modifier.fillMaxSize()) {
            WindowDraggableArea(Modifier.fillMaxWidth().background(Color.LightGray)) {
                Box(Modifier.fillMaxWidth().padding(4.dp), contentAlignment = Alignment.Center) {
                    Text("Draggable Window")
                }
            }
            Surface(Modifier.fillMaxWidth().weight(1f)) {}
        }
    }
}

Release Notes

Features - Desktop

• [Linux] Improve window dragging experience when using WindowDraggableArea on Linux with JetBrains Runtime.