USA / China dozers disarm mines by moving across minefield

[Caball009]

Current behavior for:

• GLA Worker: does not get harmed when walking across a minefield, and the mines do not detonate.
• USA / China dozer: does not get damaged when driving across a minefield, but the mines do detonate.

I think we should make the behavior consistent for all three units, because it seems currently more efficient to use the dozers to drive across a minefield instead of clearing it.

There's a specific check for it here:

GeneralsGameCode/GeneralsMD/Code/GameEngine/Source/GameLogic/Object/Behavior/MinefieldBehavior.cpp

Lines 364 to 369 in b878990

	if (!d->m_workersDetonate)
	{
	// infantry+dozer=worker.
	if (other->isKindOf(KINDOF_INFANTRY) && other->isKindOf(KINDOF_DOZER))
	return;
	}

[Caball009]

MinefieldBehaviorModuleData::m_workersDetonate and its comments should probably be renamed and updated, if we make dozers behave the same way as workers here.