Detaching vehicle from bike rack gives carrier vehicle the wreckage tag, disabling gap filling

[DeeUnderscore]

Describe the bug

After detaching a carried vehicle from a bike rack, the carrier vehicle acquires the wreckage tag. The consequence is that gap-filling fake parts no longer appear when the carrier vehicle goes diagonal.

Steps to reproduce

1. Put a bike rack on something like a Luxury RV.
2. Attach a shopping cart to the bike rack
3. Drive the RV around, go diagonal, observe fake parts appearing
4. Detach shopping cart from vehicle
5. Drive the RV around, go diagonal, no fake parts appear

Expected behavior

Fake parts should appear as long as the vehicle is functional and can move and turn.

Screenshots

No response

Versions and configuration

• OS: Linux
  • OS Version: Distributor ID: NixOS; Description: NixOS 22.05 (Quokka); Release: 22.05; Codename: quokka;
• Game Version: 0.F-11616-gb87b910f87 [64-bit]
• Graphics Version: Tiles
• Game Language: English [en]
• Mods loaded: [
  Dark Days Ahead [dda],
  Disable NPC Needs [no_npc_food]
  ]

Additional context

Here's saves from before and after removing a shopping cart off a rack. The -after save demonstrates the bug, and you can see the wreckage tag get applied in maps/-2.-6.0/-36.-169.0.map.

The relevant code seems to be in vehicle.cpp, in vehicle::split_vehicles(), called from vehicle::remove_carried_vehicle()