Allow Binding the First Workspace Page before the Rest.

The way WorkspaceBinder is currently setup, any calls to
bindWorkspace will result in the entire workspace being bound
all at the same time. These edits change that. Now callers
like LoaderTask can bind the first workspace pages before the
rest by splitting the WorkspaceBinding into 3 methods that
need to be called in order, but can happen at a staggered cadence.

Bug: 251502424
Test: Loaded and bound the workspace properly.
Change-Id: I28fa721ea95dae2df03e27f600653ba5bebe3ef1