fix(codegen): include NumberValue export in DocumentClient codegen (#5456)

Author: kuhe

Diff for: codegen/smithy-aws-typescript-codegen/src/main/java/software/amazon/smithy/aws/typescript/codegen/AddDocumentClientPlugin.java

@@ -123,6 +123,7 @@ private void writeAdditionalFiles(
                 writer.write("export * from './pagination';");
                 writer.write("export * from './$L';", DocumentClientUtils.CLIENT_NAME);
                 writer.write("export * from './$L';", DocumentClientUtils.CLIENT_FULL_NAME);
+                writer.write("export { NumberValueImpl as NumberValue } from \"@aws-sdk/util-dynamodb\";");
             });
         }
     }

Diff for: lib/lib-dynamodb/src/index.ts

@@ -4,5 +4,4 @@ export * from "./DynamoDBDocumentClient";
 // smithy-typescript generated code
 export * from "./commands";
 export * from "./pagination";
-
 export { NumberValueImpl as NumberValue } from "@aws-sdk/util-dynamodb";