R1:c51752b4aa79

When publishing project transactions, load ancestor members

Summary: Ref T10010. Fixes T10107. When we publish a transaction about a project, we perform visibility checks for many different users. We need to know all of the ancestors' members to perform these checks.

Test Plan:
- Before patch: when updating a subproject, daemons fatal trying to publish things because they can not test visibility of parent projects.
- After patch: daemons successfully publish subproject updates.
- Also added a unit…