fix(browse): format filter + sentry AbortError filtering

- Preserve 'all' value in format filter URL param so "All Formats"
  selection persists correctly
- Filter AbortError from client-side Sentry error reporting

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/web/sentry.client.config.ts

@@ -30,6 +30,13 @@ Sentry.init({
   replaysOnErrorSampleRate: 1.0, // 100% of sessions with errors
 
   // Filter out common non-actionable errors
+  ignoreErrors: [
+    // AbortError during navigation is expected browser behavior when
+    // Next.js RSC prefetch/streaming requests get cancelled mid-flight
+    "AbortError: BodyStreamBuffer was aborted",
+    "AbortError",
+  ],
+
   beforeSend(event, hint) {
     // Ignore ResizeObserver errors (browser quirk, not actionable)
     if (event.exception?.values?.[0]?.value?.includes("ResizeObserver")) {