Fix rogue model_1 import

ModuleNameDelegator.wrtieModelIndex would traverse all `model.shapes()` causing
more models to be "visited" by ModuleNameDelegator.

Author: gosar

smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/DirectedTypeScriptCodegen.java

@@ -46,6 +46,7 @@
 import software.amazon.smithy.model.shapes.ServiceShape;
 import software.amazon.smithy.model.shapes.ShapeId;
 import software.amazon.smithy.model.traits.PaginatedTrait;
+import software.amazon.smithy.model.transform.ModelTransformer;
 import software.amazon.smithy.typescript.codegen.integration.ProtocolGenerator;
 import software.amazon.smithy.typescript.codegen.integration.RuntimeClientPlugin;
 import software.amazon.smithy.typescript.codegen.integration.TypeScriptIntegration;
@@ -374,7 +375,12 @@ public void customizeBeforeIntegrations(CustomizeDirective<TypeScriptCodegenCont
         });
 
         // TODO: do all of these parts below are before/after?
-        SymbolVisitor.writeModelIndex(directive.model(), directive.symbolProvider(), directive.fileManifest());
+
+        // TODO: Do nonTraits need to be used in any other part of the logic?
+        // Like CodegenVisitor did it before visiting structures etc.
+        Model nonTraits = ModelTransformer.create().getModelWithoutTraitShapes(directive.model());
+        SymbolVisitor.writeModelIndex(nonTraits, directive.symbolProvider(), directive.fileManifest());
+//        SymbolVisitor.writeModelIndex(directive.model(), directive.symbolProvider(), directive.fileManifest());
 
         // Generate the client Node and Browser configuration files. These
         // files are switched between in package.json based on the targeted