[vJASS] Detect auto cast orders of preplaced units with vJass

[Barade]

Scenario: I have preplaced units which get calls like:

call IssueImmediateOrder(u, "blackarrowon")

because they have Black Arrow abilities and I enabled auto cast for them.
However, this is done in the generated function main in CreateAllUnits before any module or struct initialization and hence before my trigger which detects issued orders is created/has its event etc.
Hence, I have tried to solve the detection these orders with a vJass hook.
Now I see that the hook is generated as prototype:

//Struct method generated initializers/callers:
function sa___prototype15_BlackArrowSystem__IssueImmediateOrderHook takes nothing returns boolean
    call BlackArrowSystem__IssueImmediateOrderHook(f__arg_unit1,f__arg_string1)
    return true
endfunction

function jasshelper__initstructs320175859 takes nothing returns nothing
    set st___prototype15[1]=CreateTrigger()
    call TriggerAddAction(st___prototype15[1],function sa___prototype15_BlackArrowSystem__IssueImmediateOrderHook)
    call TriggerAddCondition(st___prototype15[1],Condition(function sa___prototype15_BlackArrowSystem__IssueImmediateOrderHook))

call ExecuteFunc("s__BlackArrowSystem__S_BlackArrowSystem__Init__onInit")

endfunction

I do not understand why this is done since the functions could be ordered in a way in which it is not necessary.

This is done AFTER the creation of the preplaced units (too late):

function main takes nothing returns nothing
    call SetCameraBounds(- 3328.0 + GetCameraMargin(CAMERA_MARGIN_LEFT), - 3584.0 + GetCameraMargin(CAMERA_MARGIN_BOTTOM), 3328.0 - GetCameraMargin(CAMERA_MARGIN_RIGHT), 3072.0 - GetCameraMargin(CAMERA_MARGIN_TOP), - 3328.0 + GetCameraMargin(CAMERA_MARGIN_LEFT), 3072.0 - GetCameraMargin(CAMERA_MARGIN_TOP), 3328.0 - GetCameraMargin(CAMERA_MARGIN_RIGHT), - 3584.0 + GetCameraMargin(CAMERA_MARGIN_BOTTOM))
    call SetDayNightModels("Environment\\DNC\\DNCLordaeron\\DNCLordaeronTerrain\\DNCLordaeronTerrain.mdl", "Environment\\DNC\\DNCLordaeron\\DNCLordaeronUnit\\DNCLordaeronUnit.mdl")
    call NewSoundEnvironment("Default")
    call SetAmbientDaySound("LordaeronSummerDay")
    call SetAmbientNightSound("LordaeronSummerNight")
    call SetMapMusic("Music", true, 0)
    call CreateAllItems()
    call CreateAllUnits()
    call InitBlizzard()

call ExecuteFunc("jasshelper__initstructs320175859")

    call InitGlobals()
    call InitCustomTriggers()
    call RunInitializationTriggers()

endfunction

so I miss the orders once again.
How can I detect issued orders of preplaced units? I want to avoid the need for adding them manually.
Maybe I can somehow register the trigger event earlier? I do not want to inject the main function since I would have to call all the functions in it by myself and this is a system other people should use. I have attached the whole map script.