Revert "Improve perf by initializing protonodes as non value"

This reverts commit 936bac0d1e87a549005318d5aa0368693506a7a4.

node-graph/graph-craft/src/proto.rs

@@ -140,7 +140,7 @@ impl Default for ProtoNode {
 	fn default() -> Self {
 		Self {
 			identifier: graphene_core::ops::identity::IDENTIFIER,
-			construction_args: ConstructionArgs::Nodes(Vec::new()),
+			construction_args: ConstructionArgs::Value(value::TaggedValue::U32(0).into()),
 			call_argument: concrete!(()),
 			original_location: OriginalLocation::default(),
 			skip_deduplication: false,