fix: replace overly broad contextlib.suppress(RuntimeError) in EventBusBridge._on_domain_event

Replace the overly broad contextlib.suppress(RuntimeError) with a targeted
try/except block that only suppresses the specific RuntimeError raised when
the event queue is closed. Other RuntimeErrors will now propagate as expected,
improving error visibility and debugging.

Fixes #10511

src/cleveragents/a2a/events.py

@@ -305,10 +305,17 @@ class EventBusBridge:
             data=dict(details) if details else {},
         )
 
-        import contextlib
-
-        with contextlib.suppress(RuntimeError):
+        try:
             self._event_queue.publish(a2a_event)
+        except RuntimeError as e:
+            # Only suppress the specific error when the queue is closed.
+            # Other RuntimeErrors should propagate.
+            if "Cannot publish to a closed event queue" not in str(e):
+                raise
+            logger.debug(
+                "a2a.event_bridge.queue_closed",
+                event_type=sse_type,
+            )
 
 
 __all__ = [