[PWGHF] Add centrality dependence to D⁰–hadron correlation analysis

[ayankrmanna]

Centrality dependence has been added to enable centrality-dependent D0–hadron azimuthal correlation analysis.
Additionally, the ML filtering condition was updated by changing the || to && between the D0 and D0bar selection blocks.
This makes the selection less restrictive: a candidate is now rejected only when both D0 and D0bar fail their prompt/background ML thresholds

[github-actions]

O2 linter results: ❌ 0 errors, ⚠️ 0 warnings, 🔕 0 disabled

[vkucera]

@ayankrmanna How is this different from #13719 ?

[ayankrmanna]

Hi @vkucera The previous PR had many unintended changes related to linting, formatting and multiple commits (it was my first attempt, and I was not yet familiar with the CI/linter requirements).
This made the diff unnecessarily large and difficult to review. In this new PR, I cleaned everything and included only the intended functional changes.

• Added centrality dependence to the D⁰–hadron correlation task.
• Updated the ML filtering logic (|| → &&) with a clear justification.
  So logically the code remains the same, but this PR contains a clean and minimal diff without formatting noise.

[vkucera]

Hi @vkucera The previous PR had many unintended changes related to linting, formatting and multiple commits (it was my first attempt, and I was not yet familiar with the CI/linter requirements). This made the diff unnecessarily large and difficult to review. In this new PR, I cleaned everything and included only the intended functional changes.

* Added centrality dependence to the D⁰–hadron correlation task.

* Updated the ML filtering logic (|| → &&) with a clear justification.
  So logically the code remains the same, but this PR contains a clean and minimal diff without formatting noise.

I don't know which noise you're talking about. The only difference between the two PRs are the removed includes. If you want to make changes to your PR, update the PR and don't duplicate it.

[ayankrmanna]

Okay, @vkucera — I will continue updating the original PR on the same branch.