Default provider [files] section always executed

**Jetty version**
10.0.x

**Description**
`java -jar start.jar --add-modules=http,logging-logback` copies `resources/jetty-logging.properties`, but it should not.

Interestingly, 
`java -jar start.jar --add-modules=logging-logback,http` does *not* copy `resources/jetty-logging.properties`.

Since an explicit provider has been configured, the default provider should be out of the picture.

