Refactor/improve form item usage in examples

[akashsonune]

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[gemini-code-assist]

Summary of Changes

Hello @akashsonune, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a significant refactoring of the SiFormItemComponent and its associated control interface. The primary goal is to enhance consistency and accessibility by making the label input and errormessageId property explicitly required. This change streamlines the component's API, ensuring that all form items consistently provide essential structural and accessibility information. The update includes necessary adjustments to existing examples and internal wrappers to comply with these new requirements, improving overall code quality and maintainability.

Highlights

• API Changes for SiFormItemComponent: The label input for SiFormItemComponent has been updated to be a required input, ensuring all form items explicitly define their labels.
• API Changes for SiFormItemControl: The errormessageId property in the SiFormItemControl interface is now mandatory, promoting better accessibility by requiring a generated ID for error messages.
• Example Updates: All relevant examples and internal wrappers have been updated to comply with the new required label input and errormessageId property, including providing default or specific label values.

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[gemini-code-assist]

Code Review

This pull request refactors the si-form-item component to make its label property required, which is a good step towards better accessibility and component API clarity. It also makes errormessageId required on the SiFormItemControl interface. The changes across the codebase correctly adapt to these new requirements.

I've left a couple of suggestions in src/app/examples/si-application-header/si-launchpad.html where the si-form-item usage could be further improved by following the excellent refactoring pattern you've already applied in src/app/examples/si-localization/si-localization.html. Instead of using an empty label as a workaround, moving the existing label text to the si-form-item would be more idiomatic and better for accessibility. Additionally, removing the id attribute from input elements within si-form-item is recommended as it is automatically generated.

[github-actions]

Documentation.
Examples.
Playwright report.

Coverage Reports:

• element-ng
• element-translate-ng

[github-actions]

[akashsonune]

@spike-rabbit can you check now