Get component name from components list not from the component's model

Overview

Attempt to simplify #3467954: META: Evolve XB UI's data model to allow non-SDC components' inputs, DynamicPropSource support, etc. by ensuring that, on the front end, we always get a component's name from the component list data and not from the instance of the component's model data. This means that props called name should no longer be an issue.

Proposed resolution

To express this in pseudo code, instead of

model[selectedComponentUUID].name

we should be doing something like

allComponentsList[selectedComponentId].name

User interface changes

The UI visibly shouldn't change, but everywhere we get a component's name should be changed:

1. Component preview overlay
2. When dragging into the preview and hovering over a slot it should show the slot's name
3. Layers panel (actually this has changed, it previously said "Slot" for each slot, but will now show the slot name.
4. Context menu when right-clicking a component
5. Save as section dialog
6. The little blue rectangle you see when dragging a component (the dragImage)