fix: Translate "None" option in automation select (#11076)

# Pull Request Template

## Description

This PR includes a translation update for the "None" option in the
automation select for both agents and teams

## Type of change

- [x] Bug fix (non-breaking change which fixes an issue)



## Checklist:

- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my code
- [x] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [x] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules

app/javascript/dashboard/helper/specs/automationHelper.spec.js

@@ -118,6 +118,46 @@ describe('getActionOptions', () => {
       expectedOptions
     );
   });
+
+  it('adds None option when addNoneToListFn is provided', () => {
+    const mockAddNoneToListFn = list => [
+      { id: 'nil', name: 'None' },
+      ...(list || []),
+    ];
+
+    const agents = [
+      { id: 1, name: 'Agent 1' },
+      { id: 2, name: 'Agent 2' },
+    ];
+
+    const expectedOptions = [
+      { id: 'nil', name: 'None' },
+      { id: 1, name: 'Agent 1' },
+      { id: 2, name: 'Agent 2' },
+    ];
+
+    expect(
+      helpers.getActionOptions({
+        agents,
+        type: 'assign_agent',
+        addNoneToListFn: mockAddNoneToListFn,
+      })
+    ).toEqual(expectedOptions);
+  });
+
+  it('does not add None option when addNoneToListFn is not provided', () => {
+    const agents = [
+      { id: 1, name: 'Agent 1' },
+      { id: 2, name: 'Agent 2' },
+    ];
+
+    expect(
+      helpers.getActionOptions({
+        agents,
+        type: 'assign_agent',
+      })
+    ).toEqual(agents);
+  });
 });
 
 describe('getConditionOptions', () => {