Bug: Capability SO fails to render when Multisensor is added but left empty

[sima995]

Describe the bug
Capability SO fails to render when Multisensor is added but left empty

Steps to Reproduce
Steps to reproduce the behavior:

1. Create a new Capability SO
2. Click the plus sign on the multisensor but leave the class empty
3. Switch to something else for the inspector to render
4. Switch back and observe an empty inspector with a null reference at SensorList.cs:99.

Unity Version
2022.3.46

Package Version
3.0.23

[sima995]

When you click the plus sign to add a new multisensor the same null ref is thrown. I guess it tries to grab the sensor for the keys to render in the inspector but it's null at that moment.