Ensure java_system_modules_import uses prebuilts

Make sure that java_system_modules_import always depends on the
prebuilt by adding dependencies in the ComponentDepsMutator() method
which is called before prebuilts without a corresponding source are
renamed from prebuilt_<x> to <x>. That requires the prebuilt_ prefix
to be provided but it ensures that the dependencies are safe.

Similar logic also makes sure java_system_modules always depends on
the source module and not on a renamed prebuilt module.

Bug: 182402568
Test: m nothing
Change-Id: I30db95978f5d9b205951011edf40585ee36c0c4c