Only trigger webhook once for all assignees of a Pull Request, not once for each assignee

[ashleykleynhans]

• Gitea version (or commit ref): 1.13.0
• Git version: N/A
• Operating system: CentOS
• Database (use [x]):
  • PostgreSQL
  • MySQL
  • MSSQL
  • SQLite
• Can you reproduce the bug at https://try.gitea.io:
  • Yes (provide example URL)
  • No
• Log gist:

Description

When a webhook is triggered (MS Teams in this case), a notification is sent for each assignee of a Pull Request, causing plenty of unnecessary spam. The assignees are all added at the same time using the Gitea API when the Pull Request is created, so we would like to only receive a single notification that the Pull Request has been assigned to multiple assignees, rather than a notification for each and every single assignee.

Screenshots