Refine Shared Folder Handling

* Update Shared Folder Handling so when adding a SharePoint Library as a Shared Folder to a Business Account these are correctly handled.
* Validate that DB matches in 'online first' vs 'local first' when using Shared Folders and SharePoint added libraries (in the case of Business Accounts)
* Tested and revalided with OneDrive Business Account with 'sync_business_shared_items = "true"'
* Tested and revalided with OneDrive Business Account with 'sync_business_shared_items = "false"'
* Tested and revalided with OneDrive Personal Account