Data views: Add 'Edit' action to editable patterns

[jameskoster]

The Pages, Templates, and Template Parts data views make use of the edit post action for each item which produces the following UI:

However, user generated patterns do not currently make use of this action, producing some inconsistency in the UX. Note the missing 'Edit' action in the ellipsis menu, and the missing pencil icon button:

We can improve overall consistency by adding this action to user generated pattern data views.