fix(outline): prevent editor launch on add component

[viv-helix]

Description

This change prevents the block editor from automatically opening when a component is added from the Course Outline page.

• Removed await on refetchUnitData() inside onComponentCreated
• This avoids triggering the editor launch flow tied to unit data refresh
• Editor will still open as expected when adding components from the Unit page

Why

The new “Add component on outline page” feature should allow quick content additions without disrupting the user flow by opening the editor.

Behavior changes

✅ Outline page: adding a component does not open the editor
✅ Unit page: adding a component still opens the editor

Testing

• Add a component from the Outline page → verify editor does not open
• Add a component from the Unit page → verify editor still opens as expected

Jira

• https://2u-internal.atlassian.net/browse/TNL2-591