Auto-completions with `all` value don't seem to be attributed

[pwang347]

Testing #297204

Not sure if I'm testing this correctly, but I was under the impression that this would have added attribution (with git.addAICoAuthor set to all):

1. Press tab on a suggestion like this:

2. Save
3. Commit it using the UI
4. Doesn't show attribution

[dmitrivMS]

Need to check on editor tracking