Try some basic filtering of headless robots for /api/events and /api/cookies (#55005)

src/fixtures/tests/playwright-rendering.spec.ts

@@ -664,6 +664,10 @@ test.describe('survey', () => {
       // See https://github.com/microsoft/playwright/issues/12231
     })
 
+    await page.addInitScript(() => {
+      window.GHDOCSPLAYWRIGHT = 1
+    })
+
     await page.goto('/get-started/foo/for-playwright')
 
     // The label is visually an SVG. Finding it by its `for` value feels easier.
@@ -709,6 +713,10 @@ test.describe('survey', () => {
       // See https://github.com/microsoft/playwright/issues/12231
     })
 
+    await page.addInitScript(() => {
+      window.GHDOCSPLAYWRIGHT = 1
+    })
+
     await page.goto('/get-started/foo/for-playwright')
 
     await page.locator('[for=survey-yes]').click()