fix incorrect JsonProperty in pojo constructor (#18421)

modules/openapi-generator/src/main/resources/Java/libraries/microprofile/pojo.mustache

@@ -62,7 +62,7 @@ public class {{classname}} {{#parent}}extends {{{.}}}{{/parent}}{{#vendorExtensi
  {{#jsonb}}@JsonbCreator{{/jsonb}}{{#jackson}}@JsonCreator{{/jackson}}
   public {{classname}}(
   {{#readOnlyVars}}
-    {{#jsonb}}@JsonbProperty(value = "{{baseName}}"{{^required}}, nillable = true{{/required}}){{/jsonb}}{{#jackson}}@JsonProperty(JSON_PROPERTY_{{nameInSnakeCase}}{{#required}}, required = true{{/required}}){{/jackson}} {{{datatypeWithEnum}}} {{name}}{{^-last}}, {{/-last}}
+    {{#jsonb}}@JsonbProperty(value = "{{baseName}}"{{^required}}, nillable = true{{/required}}){{/jsonb}}{{#jackson}}@JsonProperty(value = JSON_PROPERTY_{{nameInSnakeCase}}{{#required}}, required = true{{/required}}){{/jackson}} {{{datatypeWithEnum}}} {{name}}{{^-last}}, {{/-last}}
   {{/readOnlyVars}}
   ) {
   {{#readOnlyVars}}

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

@@ -1899,6 +1899,38 @@ public class JavaClientCodegenTest {
                 .containsWithNameAndAttributes("JsonbProperty", ImmutableMap.of("value", "\"c\""));
     }
 
+    @Test
+    public void testMicroprofileGenerateCorrectJacksonGenerator_issue18336() throws Exception {
+        Map<String, Object> properties = new HashMap<>();
+        properties.put(JavaClientCodegen.MICROPROFILE_REST_CLIENT_VERSION, "3.0");
+        properties.put(CodegenConstants.SERIALIZATION_LIBRARY, JavaClientCodegen.SERIALIZATION_LIBRARY_JACKSON);
+
+        File output = Files.createTempDirectory("test").toFile();
+        output.deleteOnExit();
+
+        final CodegenConfigurator configurator = new CodegenConfigurator()
+
+                .setAdditionalProperties(properties)
+                .setGeneratorName("java")
+                .setLibrary(JavaClientCodegen.MICROPROFILE)
+                .setInputSpec("src/test/resources/bugs/issue_18336.yaml")
+                .setOutputDir(output.getAbsolutePath().replace("\\", "/"));
+
+        final ClientOptInput clientOptInput = configurator.toClientOptInput();
+        DefaultGenerator generator = new DefaultGenerator();
+        Map<String, File> files = generator.opts(clientOptInput).generate().stream()
+                .collect(Collectors.toMap(File::getName, Function.identity()));
+
+        JavaFileAssert.assertThat(files.get("Pet.java"))
+                .assertConstructor("String")
+                .assertConstructorAnnotations()
+                .containsWithName("JsonCreator")
+                .toConstructor()
+                .hasParameter("name")
+                .assertParameterAnnotations()
+                .containsWithNameAndAttributes("JsonProperty", ImmutableMap.of("value", "JSON_PROPERTY_NAME", "required", "true"));
+    }
+
     @Test
     public void testJavaClientDefaultValues_issueNoNumber() throws Exception {
         Map<String, Object> properties = new HashMap<>();

modules/openapi-generator/src/test/resources/bugs/issue_18336.yaml

@@ -0,0 +1,25 @@
+openapi: 3.0.0
+info:
+  title: "OpenAPI Definition"
+  version: "0.0.1"
+paths:
+  /pets:
+    get:
+      responses:
+        200:
+          description: "Return Pet with name"
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Pet'
+
+components:
+  schemas:
+    Pet:
+      type: object
+      required:
+        - name
+      properties:
+        name:
+          type: string
+          readOnly: true