bug: we don't need to stop parsing nested dirs if `maven-metadata.xml` file is found

[DmitriyLewen]

Description

There are times when a directory uses different GroupIDs.
In these cases first dir with maven-metadata.xml file will contain not only version dirs, but also dirs for other artifacts.

e.g.:

• https://repo1.maven.org/maven2/org/eclipse/jdt/core/maven-metadata.xml
• https://repo1.maven.org/maven2/org/eclipse/jdt/core/compiler/ecj/maven-metadata.xml
• https://repo1.maven.org/maven2/org/eclipse/jdt/core/manipulation/maven-metadata.xml