module-info.class is not added to the modular JAR index file

[plamentotev]

When creating a modular JAR file and indexing is enabled, the module-info.class entry is missing from the resulting INDEX.LIST file.

The root cause is because the current implementation of JarToolModularJarArchiver initially does not add the module-info classes to the JAR archive. It adds them later but it does not update the index.