[maven] IDEA-320329 - non-case sensitive unique artifactId in maven project import #2435
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Motivation
Fixes https://youtrack.jetbrains.com/issue/IDEA-320329
Proposed fix
Do a non-case sensitive comparison when calculating possible repeated module names.
Notes
This implementation does not fix the conflicting module names if according IDEA module already exists, it will only work if the module is new or project is under initial import.
This change can break shared run configurations for multi-module projects with non-unique artifactId names as some modules will now have another name on import from scratch.