Fix makeTemplateNode bypassing HTML sanitization

[phillipc]

Problem

makeTemplateNode in packages/binding.foreach/src/foreach.ts assigned sourceNode.text directly to parentNode.innerHTML for <script> template elements, bypassing all three HTML sanitization controls:

• options.templateSizeLimit

• options.allowScriptTagsInTemplates

• options.sanitizeHtmlTemplate

• Detected in Add TypeScript code review skill and updated findings plans #350

Fix

• Export validateHTMLInput from @tko/utils (was previously internal to html.ts)
• Route the <script> element's .text through validateHTMLInput() before assigning to innerHTML

This ensures the same size-limit, script-tag, and custom sanitizer checks apply to foreach <script> templates as they do everywhere else via parseHtmlFragment.

Testing

All 158 existing foreach tests pass (happy-dom + chromium).

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 1b6da2ab-a6f7-4438-adc7-b67f38385269

📥 Commits

Reviewing files that changed from the base of the PR and between 5657f94 and 33359ab.

📒 Files selected for processing (2)

• packages/binding.foreach/src/foreach.ts
• packages/utils/src/dom/html.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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