ROU-13034: Fix add new option when Dropdown Search has no options

[os-davidlourenco]

This PR is for fixing a crash when adding a new option to a Dropdown Search that currently has no options.

What was happening

• When Dropdown Search had an empty options list, using add new option caused _getOptionInfo to look up a missing grouped option and throw while reading figure prefix data.

What was done

• Guarded the option lookup in _getOptionInfo so icon and image prefix rendering only runs when the option exists.

Test Steps

1. Open a page with a Dropdown Search that has no options and allow adding new options enabled.
2. Type a new value and add it.
3. Confirm the new option is added and the dropdown does not throw.
4. Repeat with a Dropdown Search that already has options, including options with icons or images, and confirm prefixes still render.

Screenshots

(prefer animated gif)

Checklist

• tested locally
• documented the code
• clean all warnings and errors of eslint
• requires changes in OutSystems (if so, provide a module with changes)
• requires new sample page in OutSystems (if so, provide a module with changes)

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

🖼️ Storybook: Chromatic UI tests result: ✅ Passed

Metric	Value
Visual changes	1
Errors	0
Storybook	Preview
Chromatic Build	View Results