Branch plan drop-down doesn't differentiate between enabled/disabled branches

Issue Summary

The branch plan drop-down button does not differentiate between enabled and disabled branches as older Bamboo versions.

Steps to Reproduce

1. Install Bamboo 7.0.1.
2. Access any plan that contains branches and disable any branch.
3. Click on the drop-down button in the plan branch.

Expected Results

Bamboo should differentiate between enabled and disabled branches as older Bamboo versions:

 Enabled branches are shown in blue and at the top of the list and disabled branches are shown in gray at the bottom of the list.

Actual Results

In Bamboo 7.0.1, all the branches are shown in gray color:

Workaround

Currently, there's no workaround.