Build fails with WITH_DEV_AUTOMATION_TESTS = 0 on release 2.0 - H20.5.487

[gsyberg]

I think a line in HoudiniEditorUnitTestUtils.h hade been misplaced.

class FHoudiniLatentTestCommand : public FFunctionLatentCommand
{
public:
	// Each part of an HDA that requires a Cook should be its own FFunctionLatentCommand. Before the Update()
	// function is called this class ensures the previous cook completed.

	FHoudiniLatentTestCommand(TSharedPtr<FHoudiniTestContext> InContext, TFunction<bool()> InLatentPredicate)
		: FFunctionLatentCommand(InLatentPredicate), Context(InContext) {}

	TSharedPtr<FHoudiniTestContext> Context;

	// Like its base class, return true when the command is complete, false when it should be called again.
	virtual bool Update() override;
};


#if WITH_DEV_AUTOMATION_TESTS

#endif

#if WITH_DEV_AUTOMATION_TESTS needs to come before FHoudiniLatentTestCommand is defined.

Not critical as I can just change it here for now.