Resolution is no longer mandatory by default when it's added to screen

Issue Summary

Whenever Resolution field added to any screen, it will be required by default and can't be empty. It is now optional and users can proceed with empty Resolution when it's added to screen.

Steps to Reproduce

1. Have a screen added between 2 statuses
2. Add Resolution field to the field
3. Try to transition the issue and leave Resolution to be empty.
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Expected Results

Jira doesn't allow user to proceed.

Actual Results

User can transition the issue with empty Resolution 

Workaround

Use Workflow validator to make Resolution  required.