Add 'is-invalid' class to input-group based on validation

[alexinfurs]

Fixes a bug where the validationText was not displayed for non-text input fields.

Fixes #

PR Checklist

• My branch is up-to-date with the Upstream main branch.
• The unit tests pass locally with my changes (if applicable).
• I have added tests that prove my fix is effective or that my feature works (if applicable).
• I have added necessary documentation (if appropriate).

Short description of what this resolves:

Changes proposed in this Pull Request:

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Project	Deployment	Preview	Updated (UTC)
design-react-kit	Ready	Preview	Nov 7, 2025 2:42pm