fix(site-builder): HtmlBlock render stops applying style so editor matches published output

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

craft/src/components/basic/HtmlBlock.render.test.tsx

@@ -0,0 +1,51 @@
+import { describe, test, expect, vi } from 'vitest';
+import React from 'react';
+import { createRoot, Root } from 'react-dom/client';
+import { act } from 'react-dom/test-utils';
+
+vi.mock('@craftjs/core', () => ({
+  useNode: (collect?: (node: any) => any) => {
+    const node = { events: { selected: false } };
+    return {
+      connectors: { connect: (el: any) => el, drag: (el: any) => el },
+      actions: { setProp: vi.fn() },
+      ...(collect ? collect(node) : {}),
+    };
+  },
+}));
+
+import { HtmlBlock } from './HtmlBlock';
+
+let container: HTMLDivElement;
+let root: Root;
+
+function render(ui: React.ReactElement) {
+  container = document.createElement('div');
+  document.body.appendChild(container);
+  act(() => {
+    root = createRoot(container);
+    root.render(ui);
+  });
+}
+
+describe('HtmlBlock render ignores the style prop (matches toHtml)', () => {
+  test('a stored backgroundColor/color/padding is NOT applied to the wrapper', () => {
+    render(
+      React.createElement(HtmlBlock as any, {
+        code: '<p>hello</p>',
+        style: { backgroundColor: 'rgb(255, 0, 0)', color: 'rgb(0, 0, 255)', padding: '40px' },
+      }),
+    );
+    const wrapper = container.firstElementChild as HTMLElement;
+    expect(wrapper.style.backgroundColor).toBe('');
+    expect(wrapper.style.color).toBe('');
+    expect(wrapper.style.padding).toBe('');
+  });
+
+  test('the editor affordances survive: minHeight is kept, content still renders', () => {
+    render(React.createElement(HtmlBlock as any, { code: '<p>hello</p>', style: {} }));
+    const wrapper = container.firstElementChild as HTMLElement;
+    expect(wrapper.style.minHeight).toBe('40px');
+    expect(wrapper.innerHTML).toContain('hello');
+  });
+});