'Modify Variables' Creates Duplicate Entry When Used from Ad-Hoc Order Section

Current Behavior:

• When a user clicks on "Modify Variables" while adding an order from the Ad-Hoc Order section, all available workflow variables are shown. If the user removes one variable from the list and then clicks "Modify Variables" again, JOC creates a duplicate entry for the first variable in the list—regardless of its type.

Steps to Reproduce:

• Create a workflow with the following workflow variables: test1 (String type), test2 (Number type), and test3 (Boolean type).
• Assign values to each of them and deploy the workflow.
• In the workflow view, click the + icon to add an Ad-Hoc order.
• Click Modify Variables — a list of all three variables will be shown.
• Remove test3 from the list.
• Click Modify Variables again.
  A duplicate entry of test1 (the first variable) appears in the GUI. [see attached image: {_}jira-Modify-Variables.png{_}]

Desired Behavior:

• The GUI should not create duplicate entries of any workflow variable when modifying variables from an Ad-Hoc order section.