Following up from discussions in the comments in https://phabricator.wikimedia.org/T269638#6985191, it is jarring when the editing toolbars and cards are loading on Desktop under the intro pop-up, so we should change the timing of the onboarding dialog to be later.
On desktop, the onboarding dialog should appear after the progress bar for VisualEditor finishes. Link inspector should only show up upon closing the dialog.