ReActor node is broken in multiple ways

1. ReActor node isn't recognized in Manager as being installed after installation on Linux.
- Possible duplicate of #1684
- Possibly due to case-sensitive filesystem and package name being incorrect, but I don't know if @svetozarov is using Linux

2. (Never mind, this isn't a ReActor issue) When switching workflow tabs, any workflow using a "Load Image" node will mark itself as having "unsaved changes". Very frustrating.
- This obviously affects ReActor workflows, even if ReActor isn't causing the issue
- I've filed https://github.com/Comfy-Org/ComfyUI_frontend/issues/3254