When calling drive enumeration, secretly return only the user's default drive if running in onedrive, to prevent us from loading multiple drives unintentionally.
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#### Does this PR need a docs update or release note?
- [x] ✅ Yes, it's included
#### Type of change
- [x] 🐛 Bugfix
#### Issue(s)
* #3335
#### Test Plan
- [x] 💪 Manual
- [x] ⚡ Unit test
- [x] 💚 E2E