Feeds from organization actions are doubled

[Morlinest]

• Gitea version (or commit ref): 8aadf79
• Git version: 2.11.1
• Operating system: Win10
• Database (use [x]):
  • PostgreSQL
  • MySQL
  • MSSQL
  • SQLite
• Can you reproduce the bug at https://try.gitea.io:
  • Yes (provide example URL)
  • No
  • Not relevant
• Log gist:

Description

As title

Screenshots

[Morlinest]

Also caused by #2205.

After reverting models/action.go: