Fix factories being able to build their upgrades as a unit

[lL1l1]

Issue

• Fixes the sim side of an issue reported on Discord where using the "Build T2 support factory" hotkey you can build the support factory as a unit instead of an upgrade.
  Spawn uab0102 and give the following order to reproduce the bug:

IssueBlueprintCommandToUnits(GetSelectedUnits(), "UNITCOMMAND_BuildFactory", 'uab0202', 1, false)

• This is a return of the issue in Possible to build factories in factories due to hotbuild #1043. In that discussion there were talks about fixing the construction panel to display upgrades without needing them in the buildable categories. At the moment I don't find that feasible because @clyfordv is working on a construction panel rework.

Description of the proposed changes

• Add the appropriate UpgradeOnlyCategory for all 60 factories.
• Move the UpgradeOnlyCategory logic into CheckBuildRestrictions, as that is the only place where it is needed since it only matters for FactoryBuild and BuildMobile orders. This simplifies the logic overall.
• Fix the factory and structure units not returning when the base class's OnStartBuild reports a failure. In particular this fixed errors when the factory was ordered to build (not upgrade) a factory upgrade and UpgradeOnlyCategory logic was not in CheckBuildRestrictions.

Testing done on the proposed changes

Test hives again since the logic added by #6709 was changed. Use xrb0104.

import("/lua/ui/game/commandmode.lua").StartCommandMode('build', {name = 'xrb0204'})

Test that factories cannot factory build their own upgrades. Use uab0102.

IssueBlueprintCommandToUnits(GetSelectedUnits(), "UNITCOMMAND_BuildFactory", 'uab0202', 1, false)

Checklist

• Changes are annotated, including comments where useful
• Changes are documented in a changelog snippet according to the guidelines.
• Request 2-3 reviewers from the list of reviewers and their areas of knowledge.

[4z0t]

Some mods will still have this issue. I suggest generating this field based on UpgradesFrom and UpgradesFromBase.

[lL1l1]

Doing that would restrict the possibility of a unit that can upgrade into + build copies of its upgrade.

[lL1l1]

Ideally the construction UI has an "upgrade into unit" button and a "build unit" button. The real issue is that it abuses the BuildableCategories to identify upgrades, and that blueprint setup causes side effects. Iirc you can upgrade into a unit if it has the correct UpgradesFrom fields, even if its not in the buildable categories.