centered-cinnamon-dock: hide actor when hiding dock and no active menus, fix dock occupying screen area after hiding

[Dodothereal]

centered-cinnamon-dock: hide actor when hiding dock and no active menus, fix dock occupying screen area after hiding

Summary

The dock continues to occupy screen area and capture mouse clicks after hiding because the actor is scaled to 0,0 but not hidden. This change ensures that when the dock is hidden and there are no active menus, the actor is both scaled to 0,0 and hidden, allowing clicks to pass through.

Fixes #1098

Changes

• Modified hidePanel function to call panel.actor.hide() when setting scale to 0,0 and there are no active menus.

Testing

• Verified syntax with node -c on the modified file (no errors).
• Reviewed the code logic to ensure the fix addresses the issue without introducing regressions.

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AI assistance disclosure

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