fix(posthog): disable bot UA filter on staging so e2e can exercise surveys

posthog-js silently drops every capture when userAgentData.brands contains
HeadlessChrome (UA string/webdriver masking doesn't help), which also starves
event-triggered surveys in Playwright runs against dev.sase.tr. Production
keeps the bot filter.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

apps/web/src/lib/posthog.ts

@@ -41,6 +41,9 @@ export function initPostHog(): void {
       // PII leak.
       autocapture: false,
       enable_heatmaps: true,
+      // Staging only: don't drop events from automation UAs (Playwright e2e of
+      // surveys/flags runs against dev.sase.tr). Prod keeps the bot filter.
+      opt_out_useragent_filter: window.location.hostname !== "sase.tr",
       session_recording: {
         maskAllInputs: false,
         maskInputOptions: { password: true },