Ensure the node starting position is in the center of the canvas #42
Description
@claude When a new tab is created in Node-RED or when first using Node-RED, the canvas starts in the left upper corner. This means you cannot scroll left or up and if you need space on those sides of your created flows, you instead need to move the whole flow before being able to create nodes there. The starting position instead should be in the center of the canvas so the user can extend to any side. Make this the default.