Docs Metadata updates (#24929)

* Failsafe metadata update

* docs: update module reference metadata

* docs: update parameter reference metadata

* docs: metadata: update uORB graph JSONs

* uorb message metadata updates

* Add new uorb topics to sidebar

* Remove uorb topics that no longer exist

* fix up resulting docs links

---------

Co-authored-by: PX4BuildBot <bot@pixhawk.org>

docs/en/msg_docs/FixedWingLongitudinalSetpoint.md

@@ -0,0 +1,26 @@
+# FixedWingLongitudinalSetpoint (UORB message)
+
+Fixed Wing Longitudinal Setpoint message
+Used by the fw_lateral_longitudinal_control module
+If pitch_direct and throttle_direct are not both finite, then the controller relies on altitude/height_rate and equivalent_airspeed to control vertical motion.
+If both altitude and height_rate are NAN, the controller maintains the current altitude.
+
+[source file](https://github.com/PX4/PX4-Autopilot/blob/main/msg/versioned/FixedWingLongitudinalSetpoint.msg)
+
+```c
+# Fixed Wing Longitudinal Setpoint message
+# Used by the fw_lateral_longitudinal_control module
+# If pitch_direct and throttle_direct are not both finite, then the controller relies on altitude/height_rate and equivalent_airspeed to control vertical motion.
+# If both altitude and height_rate are NAN, the controller maintains the current altitude.
+
+uint32 MESSAGE_VERSION = 0
+
+uint64 timestamp                        # time since system start (microseconds)
+
+float32 altitude  			# [m] Altitude setpoint AMSL, not controlled directly if NAN or if height_rate is finite
+float32 height_rate 			# [m/s] [ENU] Scalar height rate setpoint. NAN if not controlled directly
+float32 equivalent_airspeed 		# [m/s] [@range 0, inf] Scalar equivalent airspeed setpoint. NAN if system default should be used
+float32 pitch_direct 			# [rad] [@range -pi, pi] [FRD] NAN if not controlled, overrides total energy controller
+float32 throttle_direct 		# [norm] [@range 0,1] NAN if not controlled, overrides total energy controller
+
+```