Let the compiled module descriptors of modules provided by JavaFX contain version information.

Java/JDK modules (and other libraries/frameworkds) do contain such information, which leads to printouts like the following from a custom runtime image:
{noformat}
    java --list-modules
    java.base@16.0.1
    ...
    javafx.base
    javafx.controls
    javafx.graphics
    javafx.media
    javafx.web
    ...
    jdk.unsupported@16.0.1
    org.apiguardian.api@1.1.1
    org.junit.jupiter.api@5.8.0-M1
    ...
    org.junit.platform.reporting@1.8.0-M1
    org.opentest4j@1.2.0
{noformat}

Reading here, for example, {{javafx.base@17[-ea+9]}} would make reasoning about the version of JavaFX packaged into the custom runtime image much easier.