No, and for at least two reasons, each equally valid.
A/ if it is not a tombak per se with no metuk that goes a long way from saying there are not such spears, perhaps by a different name, in Indonesia, and {([I think this was B;.......])} in fact I have seen such blades, which had either lost, or never had a drawn on bolster (likewis for kris, BTW); so, as with what I'd already said about budiak, defining the term in a tightly constrained manner may be unhelpful in this particular discussion.
B? Snap, I forgot B, and your post isn';t showing in the bit I can read below. Maybe I somehow included B in A; I don't know; lost track of the thought.....
Additional: I have a reason it is not a budiak (broadly construed, etc.). Budiaks AFAIK have rhomboid (ie. diamond) cross section. This blade is midribbed, at least a the base, with a wide, semicircular rib, like a tombak.
It appears to be a tombak, mounted as a dagger. They often are.
Just for reference, the Thai(?) spear I mentioned is one of the leaf-bladed ones; one inch thick at the blade base, and with a 14" tang
love, spear, love