feature core/input: validation in input components

[1307-Dev]

💡 What is the current behavior?

There are some errors which prevent validations from happening has expected.

GitHub Issue Number: #1799
JIRA: IX-2595

🆕 What is the new behavior?

The acceptance criteria for this ticket has been met-
Required input:

Invalid input > Removing value with keyboard > Stays invalid
Invalid input > Remove touched state (e.g. clear button) > Valid again
Invalid input > Programmatically setting it to empty > Stays invalid
Valid input > Removing value with keyboard > It is invalid
Valid input > Remove touched state (e.g. clear button) > Valid
Valid input > Programmatically setting it to empty > It is invalid
Not required input:

Invalid input > Removing value with keyboard > Valid
Invalid input > Remove touched state (e.g. clear button) > Valid again
Invalid input > Programmatically setting it to empty > Valid
Valid input > Removing value with keyboard > Valid
Valid input > Remove touched state (e.g. clear button) > Valid
Valid input > Programmatically setting it to empty > Valid

Furthermore a clear method has been added to all components to remove all validations and inputs added.

🏁 Checklist

A pull request can only be merged if all of these conditions are met (where applicable):

• 🦮 Accessibility (a11y) features were implemented
• 🗺️ Internationalization (i18n) - no hard coded strings
• 📲 Responsiveness - components handle viewport changes and content overflow gracefully
• 📕 Add or update a Storybook story
• 📄 Documentation was reviewed/updated siemens/ix-docs
• 🧪 Unit tests were added/updated and pass (pnpm test)
• 📸 Visual regression tests were added/updated and pass (Guide)
• 🧐 Static code analysis passes (pnpm lint)
• 🏗️ Successful compilation (pnpm build, changes pushed)

👨‍💻 Help & support

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Latest commit: cce01fc

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[sonarqubecloud]

Quality Gate failed

Failed conditions
6.2% Duplication on New Code (required ≤ 3%)

See analysis details on SonarQube Cloud

[nuke-ellington]

Before thorough review can be conducted please:

1. Resolve conflicts
2. Reduce code duplication (Sonarqube)
3. Fix pipeline (unit test stage)

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.1% Duplication on New Code

See analysis details on SonarQube Cloud

[sonarqubecloud]

❌ The last analysis has failed.

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