The facility itself is already completed and used for the assembly of the third C'bogos, it's mostly for additional stuff.That amount is quite little, purely the equipment in such a facility usually costs twice as that.
And it was for 2021 budget? then we can assume the construction of facility will start in 2022, construction of submarines will start in 2024,earliest. first submarine might be delivered in 2030.
The same facility however can be used for Type214 as well. It is a general submarine dock.
In the 3rd hull SK was involved too much (pre-assembly in Korea, also Koreans were doing main assembly in Indonesia), and there was left a little to be done by Indonesia and it wasn't really usefull. Hopefully Indonesia will be involved more in 4-5-6th hulls.
Our approach is to be independent in hull sections first before moving to the complete fabrication and assembly of subs.