Back2Source: Scala mapping does not work

[chinyeungli]

Input: scala-library-2.13.16
URL:
Devel: https://repo1.maven.org/maven2/org/scala-lang/scala-library/2.13.16/scala-library-2.13.16-sources.jar
Deploy: https://repo1.maven.org/maven2/org/scala-lang/scala-library/2.13.16/scala-library-2.13.16.jar

I ran the map_deploy_to_develop:Java pipeline in SCIO, but all .class files found in deploy side don't have match with the devel where the corresponding .scala files are found in the sources.

Reference: #1510
(It may be also related to #1404)