Multiselect bullet in context view is not highlighted

[raineorshine]

Review the difference between Path and SimplePath before starting work on this issue.

Steps to Reproduce

- a
  - m
    - x
- b
  - m
    - y

1. Set the cursor on a/m
2. Activate Context View
3. Long press a/m~/a or a/m~/a/x

Current Behavior

The long pressed bullets do not stay highlighted once selected.

Expected Behavior

Multicursor bullets should be highlighted when selected.

Testing

Add appropriate unit tests.