refactor(test): use getByRole('main') for narrower scope

Replace page.locator('body') with page.getByRole('main') to more
precisely target the test content area.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: Skn0tt

tests/playwright-test/reporter-html.spec.ts

@@ -3276,7 +3276,7 @@ test('should support sorting by duration', async ({ runInlineTest, showReport, p
 
   const searchInput = page.locator('.subnav-search-input');
 
-  await expect(page.locator('body')).toMatchAriaSnapshot(`
+  await expect(page.getByRole('main')).toMatchAriaSnapshot(`
     - button "a.test.js" [expanded]
     - region:
       - link "fast test"
@@ -3289,7 +3289,7 @@ test('should support sorting by duration', async ({ runInlineTest, showReport, p
   `);
 
   await searchInput.fill('o:duration');
-  await expect(page.locator('body')).toMatchAriaSnapshot(`
+  await expect(page.getByRole('main')).toMatchAriaSnapshot(`
     - button [expanded]
     - region:
       - link "very fast test"
@@ -3300,7 +3300,7 @@ test('should support sorting by duration', async ({ runInlineTest, showReport, p
   `);
 
   await searchInput.fill('!o:duration');
-  await expect(page.locator('body')).toMatchAriaSnapshot(`
+  await expect(page.getByRole('main')).toMatchAriaSnapshot(`
     - button [expanded]
     - region:
       - link "very slow test"
@@ -3311,7 +3311,7 @@ test('should support sorting by duration', async ({ runInlineTest, showReport, p
   `);
 
   await searchInput.clear();
-  await expect(page.locator('body')).toMatchAriaSnapshot(`
+  await expect(page.getByRole('main')).toMatchAriaSnapshot(`
     - button "a.test.js" [expanded]
     - region:
       - link "fast test"