Turbopack: change COMMON_CHUNKING_TYPE (vercel#74080)

This is an arbitrary decision, but a "regular" sync import is
`ParallelInheritAsync`. This creates less intermediate notes when
building the graph

crates/next-api/src/module_graph.rs

@@ -169,7 +169,7 @@ struct SingleModuleGraphBuilderEdge {
 
 /// The chunking type that occurs most often, is handled more efficiently by not creating
 /// intermediate SingleModuleGraphBuilderNode::ChunkableReference nodes.
-const COMMON_CHUNKING_TYPE: ChunkingType = ChunkingType::Parallel;
+const COMMON_CHUNKING_TYPE: ChunkingType = ChunkingType::ParallelInheritAsync;
 
 struct SingleModuleGraphBuilder {}
 impl Visit<SingleModuleGraphBuilderNode> for SingleModuleGraphBuilder {