Fix the handling intEnum shapes when generating output value

`intEnum` shapes aren't handled correctly when generating output value
provider. This one-line change fixes this issue.

smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/integration/HttpBindingProtocolGenerator.java

@@ -2677,6 +2677,7 @@ private String getNumberOutputParam(
                         context.getWriter().addImport(
                                 "strictParseLong", "__strictParseLong", "@aws-sdk/smithy-client");
                         return "__strictParseLong(" + dataSource + ")";
+                    case INT_ENUM:
                     case INTEGER:
                         context.getWriter().addImport(
                                 "strictParseInt32", "__strictParseInt32", "@aws-sdk/smithy-client");