Fix HAR capture missing API requests under heavy traffic (#1135)

The CDP event broadcast buffer (256 events) was too small for pages with
many concurrent API requests, causing silent event drops. Modern SPAs
routinely fire 100+ API calls during page load, generating 300+ CDP
network events that would overflow the buffer between drain cycles.

Changes:
- Increase CDP broadcast buffer from 256 to 4096 (event channel) and
  512 to 4096 (raw channel)
- Reduce background drain interval from 500ms to 100ms
- Handle Network.loadingFailed events in HAR recording
- Enable Network.enable on cross-origin iframe sessions during HAR
  recording and request tracking
- Allow Network events from iframe sessions through the session filter
- Log a warning when buffer overflow occurs instead of silently dropping

Fixes #1128

Co-authored-by: ctate <366502+ctate@users.noreply.github.com>

cli/src/native/daemon.rs

@@ -156,7 +156,7 @@ async fn run_socket_server(
     let (reset_tx, mut reset_rx) = mpsc::channel::<()>(64);
     let reset_tx = idle_timeout_ms.map(|_| Arc::new(reset_tx));
 
-    let mut drain_interval = tokio::time::interval(Duration::from_millis(500));
+    let mut drain_interval = tokio::time::interval(Duration::from_millis(100));
     drain_interval.set_missed_tick_behavior(tokio::time::MissedTickBehavior::Skip);
 
     loop {