DubboGrpcGenerator output java code not format.

[win5do]

• I have searched the issues of this repository and believe that this is not a duplicate.
• I have searched the release notes of this repository and believe that this is not a duplicate.

Describe the feature

        <dubbo.version>2.7.7</dubbo.version>
        <dubbo.compiler.version>3.1.10</dubbo.compiler.version>
        <spring.version>4.3.16.RELEASE</spring.version>
        <grpc.version>1.34.1</grpc.version>
        <protoc.version>3.21.9</protoc.version>
        <protoc.third_party>./</protoc.third_party>
        <protobuff-java.version>3.21.9</protobuff-java.version>


            <plugin>
                <groupId>org.xolstice.maven.plugins</groupId>
                <artifactId>protobuf-maven-plugin</artifactId>
                <version>0.6.1</version>
                <configuration>
                    <protocArtifact>com.google.protobuf:protoc:${protoc.version}:exe:${os.detected.classifier}
                    </protocArtifact>
                    <pluginId>grpc-java</pluginId>
                    <pluginArtifact>io.grpc:protoc-gen-grpc-java:${grpc.version}:exe:${os.detected.classifier}
                    </pluginArtifact>
                    <outputDirectory>build/generated/source/proto/main/java</outputDirectory>
                    <clearOutputDirectory>false</clearOutputDirectory>
                    <protocPlugins>
                        <protocPlugin>
                            <id>dubbo-grpc</id>
                            <groupId>org.apache.dubbo</groupId>
                            <artifactId>dubbo-compiler</artifactId>
                            <version>${dubbo.compiler.version}</version>
                            <mainClass>org.apache.dubbo.gen.grpc.DubboGrpcGenerator</mainClass>
                        </protocPlugin>
                    </protocPlugins>
                    <additionalProtoPathElements>
                        <additionalProtoPathElement>${protoc.third_party}</additionalProtoPathElement>
                    </additionalProtoPathElements>
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>compile</goal>
                            <goal>compile-custom</goal>
                            <goal>test-compile</goal>
                            <goal>test-compile-custom</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>

The java code format is confusing, can it be formatted and then generated?

[AlbumenJ]

Will be fixed in #12297