Sway Workspace: Fix workspace button not showing for tabbed/nested layouts #4046
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This PR improves the logic used to detect the currently focused workspace in Sway by fixing an issue that occurred when the layout was set to tabbed (or any other nested layout).
Previously, the code only checked one level deep for a focused container, this failed to detect focus correctly when the focused view was nested deeper within tabbed or stacked containers, causing waybar to show incorrect or missing workspace names.
We now recursively traverse all child nodes (including nodes and floating_nodes) to check for a focused container, ensuring proper detection regardless of layout depth