Eclipse doesn't automatically attach sources for canonical Kotlin sources JAR layout

I work at [Stainless](https://stainless.com), which generates SDKs for various companies.

We received a report in the OpenAI Java repo that our sources JAR layout is not automatically supported by Eclipse (https://github.com/openai/openai-java/issues/447). I ultimately realized that this is what the [`kotlinSourcesJar` task does by default](https://github.com/vanniktech/gradle-maven-publish-plugin/issues/674#issuecomment-2833938053), probably to support [multiplatform projects](https://github.com/vanniktech/gradle-maven-publish-plugin/issues/674#issuecomment-2835310620).

Not sure if this is the right repository for this issue, but is this a bug? Should Eclipse automatically support this sources JAR layout?