Address deprecated code when handling import.xml files outside of /settings/

[dgriffon]

Environment and versions used

Js module 1.2.0-SNAPSHOT

Steps to reproduce

Given a js module with the following:

• an import.xml at root level
• an import.xml under the /settings folder

Current Behavior

As the import file at root level is copied under /META-INF and all the content of /settings is copied under /META-INF it ends up with 2 files with the same name into the jar file.
The module fail to start with the following error:

2026-01-12 08:22:24,182: INFO  [ModuleManagerImpl] - Installation failed for bundles [URL [js://file:/var/jahia/modules/package.tgz]] on target null (took 87 ms). Operation error: duplicate entry: META-INF/import.xml

java.util.zip.ZipException: duplicate entry: META-INF/import.xml

	at java.base/java.util.zip.ZipOutputStream.putNextEntry(ZipOutputStream.java:244) ~[?:?]

	at java.base/java.util.jar.JarOutputStream.putNextEntry(JarOutputStream.java:115) ~[?:?]

	at org.jahia.modules.javascript.modules.engine.jshandler.JavascriptProtocolConnection.getInputStream(JavascriptProtocolConnection.java:147) ~[?:?]

Desired Behavior

As documented only the /settings/import.xml is supported, it means that we have to remove the current support of the import.xml at the root level of the js module.