Fix duplicate aria-labelledby ids in inputs

[dclaux]

Related Issue

Fixes #5686

Description

• A previous merge caused code that had been moved from one method to another to be exist in both methods. This PR removes the duplicated code.
• This bug applied to all inputs, not just Input.ChoiceSet

Sample Card

{
    "type": "AdaptiveCard",
    "$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
    "version": "1.3",
    "body": [
        {
            "type": "Input.Text",
            "placeholder": "Placeholder text",
            "label": "Text input label"
        },
        {
            "type": "Input.ChoiceSet",
            "choices": [
                {
                    "title": "Choice 1",
                    "value": "Choice 1"
                },
                {
                    "title": "Choice 2",
                    "value": "Choice 2"
                }
            ],
            "placeholder": "Placeholder text",
            "label": "ChoiceSet input label"
        }
    ]
}

How Verified

Verified manually in adaptivecards-designer-app

Microsoft Reviewers: Open in CodeFlow

[ghost]

Hi @dclaux. Thanks for helping make the AdaptiveCards JS renderer + tooling better. As additional verification, once the JS build succeeds, please go to the test site to test out your website/designer changes.

[jonmill]

LGTM! Thanks for the quick turnaround