[Common] Fix fetching of centrality configuration in centrality study - #16943

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Name of a workflow file must match the name of the main struct in it (without the PWG prefix). (Class implementation files should be in "Core" directories.)

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: thollander/actions-comment-pull-request@v3. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

To tolerate certain issues in a directory, add a line with the test name in "o2linter_config".