Metadata update 20251203 (#26031)

* Metadata update 20251203

* Deleted translated removed msg

* _sidebar update to current

docs/en/msg_docs/RegisterExtComponentReplyV0.md

@@ -0,0 +1,22 @@
+# RegisterExtComponentReplyV0 (UORB message)
+
+[source file](https://github.com/PX4/PX4-Autopilot/blob/main/msg/px4_msgs_old/msg/RegisterExtComponentReplyV0.msg)
+
+```c
+uint32 MESSAGE_VERSION = 0
+
+uint64 timestamp # time since system start (microseconds)
+
+uint64 request_id          # ID from the request
+char[25] name              # name from the request
+
+uint16 px4_ros2_api_version
+
+bool success
+int8 arming_check_id      # arming check registration ID (-1 if invalid)
+int8 mode_id              # assigned mode ID (-1 if invalid)
+int8 mode_executor_id     # assigned mode executor ID (-1 if invalid)
+
+uint8 ORB_QUEUE_LENGTH = 2
+
+```