Setting timeUnit in build.gradle.kts always overrides @OutputTimeUnit annotations

[felldo]

Describe the bug
When setting the timeUnit configuration, it always overrides any other setup OutputTimeUnit. For example you set the gradle configuration timeUnit to ms, you can no longer use the @OutputTimeUnit annotation to change it for a specific class or method. When removing the configurations, the annotations start working again.

To Reproduce
Steps to reproduce the behavior:

1. Add timeUnit = "ms" to your jmh configuration in the build.gradle.kts file
2. Add a @OutputTimeUnit(TimeUnit.NANOSECONDS) to a method or class benchmark.
3. The result output is alway set to the value defined in the gradle configuration. When removing the configuration, setting it on the class and method level works with different values