FR - drag to create a fixed width text element

[ryan-di]

When creating a new text element, we'd like to be able to drag as if we're creating a rectangle. On pointer up, the dragged width is going to be the fixed width of the new text element and text extending beyond the width will be wrapped. The fixed width can be altered on future resizes.

To make this work, we'd want/need the following

• show the selection border for a text that's being rendered (this would give the user a good sense of the area in which texts can go into)
• handleTextOnPointerDown should be changed to fire only on pointer up if there wasn't a "pointer down -> drag" sequence