Include optional dependencies on 'eventstream' and 'json' for smithy-aws-core when necessary

Author: jonathan343

codegen/core/src/main/java/software/amazon/smithy/python/codegen/ClientGenerator.java

@@ -222,7 +222,7 @@ raise ExpectationNotMetError("protocol and transport MUST be set on the config t
     private void generateEventStreamOperation(PythonWriter writer, OperationShape operation) {
         writer.pushState(new OperationSection(service, operation));
         writer.addDependency(SmithyPythonDependency.SMITHY_CORE);
-        writer.addDependency(SmithyPythonDependency.SMITHY_AWS_EVENT_STREAM);
+        writer.addDependency(SmithyPythonDependency.SMITHY_AWS_CORE.withOptionalDependencies("eventstream"));
         var operationSymbol = symbolProvider.toSymbol(operation);
         writer.putContext("operation", operationSymbol);
         var operationMethodSymbol = operationSymbol.expectProperty(OPERATION_METHOD);

codegen/core/src/main/java/software/amazon/smithy/python/codegen/integrations/RestJsonProtocolGenerator.java

@@ -83,8 +83,7 @@ public ApplicationProtocol getApplicationProtocol(GenerationContext context) {
 
     @Override
     public void initializeProtocol(GenerationContext context, PythonWriter writer) {
-        writer.addDependency(SmithyPythonDependency.SMITHY_AWS_CORE);
-        writer.addDependency(SmithyPythonDependency.SMITHY_JSON);
+        writer.addDependency(SmithyPythonDependency.SMITHY_AWS_CORE.withOptionalDependencies("json"));
         writer.addImport("smithy_aws_core.aio.protocols", "RestJsonClientProtocol");
         var serviceSymbol = context.symbolProvider().toSymbol(context.settings().service(context.model()));
         var serviceSchema = serviceSymbol.expectProperty(SymbolProperties.SCHEMA);