R1:cd09ba5e19d7

Replace "DiffusionCommitListView" with "DiffusionCommitGraphView"

Summary:
Ref T13552. This older view mostly duplicates other code and has only two callsites:

- The "Commits" section of user profile pages.
- The "Ambiguous Hash" page when you visit a commit hash page which is an ambiguous prefix of two or more commit hashes.

Replace both with "DiffusionCommitGraphView".

Test Plan:
- Visited profile page, clicked "Commits".
- Visited an ambiguous hash page (`rPbd3c23`).

Maniphest Tasks: T13552…