Bug description

Creating two custom widget bases frequently results in them both referring to the same set of Input widgets inside.

Steps to reproduce

1. Open Edit Mode
2. Create a custom widget base, and move it to the side
3. Create another one
4. Add an Input widget to one of them
5. If they're linked, it adds it to both of them

Primary pain point(s)

When they're linked it's not possible to create independent sets of input widgets.

This could in principle be a feature - I recommend we:

1. Determine the internal widgets by the name of the base
2. Create new bases with unique names (like we do with mission names, or just numbered sequentially)
3. Provide info text that creating multiple with the same name links them together
4. Provide warning text if it's detected that two bases in the same View have the same name

Additional context

No response

Prerequisites

• I have checked to make sure that a similar request has not already been filed or fixed.