[BUG] No evidence menu looks empty + exception

[ViMaSter]

Describe the bug

Using the in-game editor results in a NullReferenceException when opening the evidence menu before any evidence was added.

Steps To Reproduce

• Open the in-game editor
• Right after pressing Ctrl+R, press Z to open the evidence menu
• Notice an exception being thrown and the menu looking fairly barren

Expected behavior

Either

• we should have some form of quip ready for when there's no evidence at all
• handle the NullReferenceException gracefully, if we don't ever expect to be in this state during normal gameplay

Screenshots

Additional context

• Report on Sentry