No Soviet-built Indonesian fleet under continued Dutch rule

Would the Dutch East Indies still acquire Soviet naval equipment if it had not broken away when it did?

No; Dutch control would keep procurement Western, and even a later amicable independence would likely preserve those supply relationships.

The Soviet equipment historically acquired by Indonesia followed from an independent government's strategic and political choices. Continued Dutch rule would leave defense purchasing in Dutch hands rather than create a separate Indonesian naval customer. If independence came later through a cooperative settlement, the new state would already be more deeply integrated with Western institutions and supply chains. Its fleet would therefore be expected to use Dutch or other Western equipment instead of the historical Soviet package.