GRD: force headless mode for `buildEventsScheme` task
GRD: force headless mode for `buildEventsScheme` task

Otherwise, it fails on CI
[skip ci]

Undin/intellij-rust,Undin/intellij-rust,intellij-rust/intellij-rust,intellij-rust/intellij-rust,intellij-rust/intellij-rust,Undin/intellij-rust,intellij-rust/intellij-rust,intellij-rust/intellij-rust,Undin/intellij-rust,Undin/intellij-rust,intellij-rust/intellij-rust,Undin/intellij-rust