Fix ACE fuel state not being correctly set on ungaraging

[jaj22]

What type of PR is this.

1. Bug
2. Change
3. Enhancement

What have you changed and why?

The ACE fuel cargo state wasn't being correctly set when ungaraging vehicles, because ACE uses the ace_refuel_capacity variable to indicate whether the fuel cargo vars have been initialized, and doesn't set it itself until a player interacts with the vehicle. Hence fuel vehicles were being topped up to capacity when players interacted with them.

Not absolutely sure that this is a good thing to merge, because I don't think there's currently any way to top up fuel cargo other than this bug. Community might not deal well with the fix.

Please specify which Issue this PR Resolves.

closes #XXXX

Please verify the following and ensure all checks are completed.

1. Have you loaded the mission in LAN host?
2. Have you loaded the mission on a dedicated server?

Is further testing or are further changes required?

1. No
2. Yes (Please provide further detail below.)

[killerswin2]

acemod/ACE3#8981 It was merged.

[killerswin2]

This can be merged. But hold off for more info.

[Bob-Murphy]

@killerswin2 can this be merged now or not?
Please answer and adapt Label if necessary.