Invalid import when generating language service type

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When generating a type for the language service, the following is added:

import "nodejs.proto";

This should not be added and leads to a problem when generating the protobuf type.

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This has something to do with the hacky way that we are "unbinding" the type from its original source https://github.com/protoflow-labs/protoflow/blob/main/pkg/generate/nodejs.go#L135