Refresh integrated playtest packages and handle disappearing test audio streams

tools/native_package.py

@@ -196,7 +196,23 @@ def quiet_streams(application_id, sink, compat):
                 pass
         if owned:
             for args in [['move-sink-input', str(stream['index']), sink], ['set-sink-input-mute', str(stream['index']), '1']]:
-                subprocess.run(['pactl', *args], check=True, timeout=5, stdout=subprocess.DEVNULL)
+                try:
+                    subprocess.run(['pactl', *args], check=True, timeout=5, stdout=subprocess.DEVNULL)
+                except subprocess.CalledProcessError as operation_error:
+                    # Short-lived startup streams can close between listing and
+                    # routing/muting. Only a fresh, well-formed absence proves
+                    # this race harmless; a present stream or failed read fails.
+                    try:
+                        current = json.loads(subprocess.check_output(['pactl', '-f', 'json', 'list', 'sink-inputs'], text=True, timeout=5))
+                    except (OSError, subprocess.SubprocessError, ValueError) as verification_error:
+                        raise operation_error from verification_error
+                    if (not isinstance(current, list)
+                            or any(not isinstance(item, dict) or type(item.get('index')) is not int or item['index'] < 0 for item in current)
+                            or any(str(item['index']) == str(stream['index']) for item in current)):
+                        raise
+                    # Do not issue the remaining operation against a vanished
+                    # index, or touch any newly listed/unrelated stream.
+                    break
 
 
 def run_project(steam, compat, session, project, timeout, authored, silent_workbench=False, exit_after_init=False):