Fix GoClientOptionsTest for generateTypeAliasesForDedupedSchemas option

Added the new configuration option to the test suite:
- Added GENERATE_TYPE_ALIASES_FOR_DEDUPED_SCHEMAS_VALUE constant
- Added option to createOptions() map
- Added verification in GoClientOptionsTest

This fixes the CI failure where the test was validating that all
CLI options are properly tested.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: AriehSchneier

modules/openapi-generator/src/test/java/org/openapitools/codegen/go/GoClientOptionsTest.java

@@ -54,6 +54,7 @@ protected void verifyOptions() {
         verify(clientCodegen).setWithGoMod(GoClientOptionsProvider.WITH_GO_MOD_VALUE);
         verify(clientCodegen).setGenerateMarshalJSON(GoClientOptionsProvider.GENERATE_MARSHAL_JSON_VALUE);
         verify(clientCodegen).setGenerateUnmarshalJSON(GoClientOptionsProvider.GENERATE_UNMARSHAL_JSON_VALUE);
+        verify(clientCodegen).setGenerateTypeAliasesForDedupedSchemas(GoClientOptionsProvider.GENERATE_TYPE_ALIASES_FOR_DEDUPED_SCHEMAS_VALUE);
         verify(clientCodegen).setUseDefaultValuesForRequiredVars(GoClientOptionsProvider.USE_DEFAULT_VALUES_FOR_REQUIRED_VARS_VALUE);
         verify(clientCodegen).setEnumUnknownDefaultCase(Boolean.parseBoolean(GoClientOptionsProvider.ENUM_UNKNOWN_DEFAULT_CASE_VALUE));
     }

modules/openapi-generator/src/test/java/org/openapitools/codegen/options/GoClientOptionsProvider.java

@@ -39,6 +39,7 @@ public class GoClientOptionsProvider implements OptionsProvider {
     public static final boolean WITH_GO_MOD_VALUE = true;
     public static final boolean GENERATE_MARSHAL_JSON_VALUE = true;
     public static final boolean GENERATE_UNMARSHAL_JSON_VALUE = true;
+    public static final boolean GENERATE_TYPE_ALIASES_FOR_DEDUPED_SCHEMAS_VALUE = true;
     public static final boolean USE_DEFAULT_VALUES_FOR_REQUIRED_VARS_VALUE = true;
     public static final String ENUM_UNKNOWN_DEFAULT_CASE_VALUE = "false";
 
@@ -64,6 +65,7 @@ public Map<String, String> createOptions() {
                 .put(CodegenConstants.WITH_GO_MOD, "true")
                 .put(CodegenConstants.GENERATE_MARSHAL_JSON, "true")
                 .put(CodegenConstants.GENERATE_UNMARSHAL_JSON, "true")
+                .put(CodegenConstants.GENERATE_TYPE_ALIASES_FOR_DEDUPED_SCHEMAS, "true")
                 .put("generateInterfaces", "true")
                 .put("structPrefix", "true")
                 .put(CodegenConstants.USE_DEFAULT_VALUES_FOR_REQUIRED_VARS, "true")