Warning should not be displayed if "delegate build to gradle" is enabled

Short description

Expected behavior

Warning should not be displayed.

Version information

IDEA Version: IntelliJ IDEA 2018.2.2 (Ultimate Edition), Build #IU-182.4129.33, built on August 21, 2018
JDK Version: 1.8.0_181
OS Type & Version: Windows 10
Lombok Plugin Version: 0.19-LATEST-EAP-SNAPSHOT
Lombok Dependency Version: 1.18.2 (with plugin io.franzbecker.gradle-lombok 1.14)

Steps to reproduce

import gradle project in IDEA
enable File | Settings | Build, Execution, Deployment | Build Tools | Gradle | Runner | Delegate IDE build/run actions to gradle
disable File | Settings | Build, Execution, Deployment | Compiler | Annotation Processors | Enable annotation processing
1. close the project
2. open the project (warning will appear)

NOTE: after few tries I noticed that steps 2 and 3 are optional (after importing gradle project build delegation was enabled by default and annotation processing was disabled)

Sample project

https://github.com/brempusz/net.bartoos.bugs.lombok.idea-plugin-misleading-warning

NOTE: my .idea directory is attached as archive my-dot-idea.tar.gz (so you can reproduce the issue without removing my version of .idea directory)

Additional information

I think the problem is here: it should also check if delegating build to gradle is enabled. https://github.com/mplushnikov/lombok-intellij-plugin/blob/cddc5353822e66ade768c78348e12df6ee98f247/src/main/java/de/plushnikov/intellij/plugin/LombokPluginProjectValidatorComponent.java#L90

mplushnikov / lombok-intellij-plugin

Warning should not be displayed if "delegate build to gradle" is enabled #524