`onAny` does not cover `onDuplicateClassWarnings`

**Plugin version**
3.5.1 / 3.5.2-SNAPSHOT

**Gradle version**
9.2.1

**JDK version**
25

**Describe the bug**
I have `onAny { severity("fail") }` and got a duplicate class warning,
but the build did not fail. It only failed when I additionally specified
`onDuplicateClassWarnings { severity("fail") }`.

**Expected behavior**
`onAny` covering any issue

Start by reproducing the configuration with `onAny { severity("fail") }` and a duplicate class warning, then compare it with `onDuplicateClassWarnings { severity("fail") }`. Trace the `onAny` and `onDuplicateClassWarnings` entry points to determine why their severity handling differs. Done means `onAny` alone causes the duplicate class warning to fail the build.

Written by the indexing model from the issue text.