Template Builder: Smoother, More Reliable Widget Interactions

We've improved how widgets behave in the Template Builder, making the editing experience feel more polished and predictable. Selecting and hovering over widgets now highlights them more accurately, even when widgets overlap or sit on top of image widgets. Dragging a widget stays smooth and controlled regardless of what's underneath your cursor. The right-click context menu no longer causes stray highlights to flicker on the canvas. And clicking a widget will now consistently open its configuration panel every time — no more extra clicks to get it to respond.