Fix parameter metadata for Loweheiser generators

[peterbarker]

I've checked the apm.pdef.xml delta for each of the vehicles and they get something like this:

--- AntennaTracker.pdef.xml     2025-10-25 10:12:32.832725851 +1100
+++ AntennaTracker-new.pdef.xml 2025-10-25 10:12:23.367843119 +1100
@@ -12267,6 +12267,24 @@
       </param>
     </parameters>
     <parameters name="GEN_">
+      <param humanName="Seconds until maintenance required" name="GEN_MNT_TIME" documentation="Seconds until maintenance required" user="Advanced">
+</param>
+      <param humanName="Total runtime" name="GEN_RUNTIME" documentation="Total time this generator has run in seconds" user="Advanced">
+</param>
+      <param humanName="High Idle throttle" name="GEN_IDLE_TH_H" documentation="throttle value to use when warming up or cooling down" user="Advanced">
+</param>
+      <param humanName="Idle throttle" name="GEN_IDLE_TH" documentation="throttle value to use when idling" user="Advanced">
+</param>
+      <param humanName="Run Temperature" name="GEN_RUN_TEMP" documentation="temperature required for generator to start producing power in deg celsius" user="Advanced">
+</param>
+      <param humanName="Idle Temperature" name="GEN_IDLE_TEMP" documentation="temperature required for generator to return to idle after having run" user="Advanced">
+</param>
+      <param humanName="Cylinder Head Over Temperature Warning Level" name="GEN_OVER_TEMP" documentation="threshold temperature for the cylinder head above which the mavlink over temperature message gets sent" user="Advanced">
+        <field name="Units">degC</field>
+        <field name="UnitText">degrees Celsius</field>
+      </param>
+    </parameters>
+    <parameters name="GEN_">
       <param humanName="Generator type" name="GEN_TYPE" documentation="Generator type" user="Standard">
         <values>
           <value code="0">Disabled</value>

Not sure we shouldn't fix this - wouldn't be hard for the backends to collide on parameter names if they don't already.

[Hwurzburg]

@peterbarker can we get this merged?

[peterbarker]

@peterbarker can we get this merged?

If someone approves it, yes. Thems the rules.

[Hwurzburg]

I have tested locally and it does what its supposed to do