[PWGJE] Optimize loop ordering and cache jets in JetShapeTask

[ynishida-style]

To address the memory consumption issue, I improved the loop ordering and related aspects.

[github-actions]

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

[vkucera]

@ynishida-style Please make the scope of your changes clear from your PR title. The current title doesn't tell me which file or analysis is concerned.

[ynishida-style]

@ynishida-style Please make the scope of your changes clear from your PR title. The current title doesn't tell me which file or analysis is concerned.

Thank you for the comment.

In this change, I modified the loop structure by moving the jet loop inside the track loop (instead of looping over tracks inside the jet loop).

This modification was applied to all processes that use jets.　

And I changed this PR title to a clearer name.

[vkucera]

@ynishida-style Thanks for the update but the title still does not mention any file nor any analysis.

[ynishida-style]

@ynishida-style Thanks for the update but the title still does not mention any file nor any analysis.

Thank you for the comment. I have updated the title to explicitly mention the task name. Could you please check this?

[vkucera]

@ynishida-style Thanks for the update but the title still does not mention any file nor any analysis.

Thank you for the comment. I have updated the title to explicitly mention the task name. Could you please check this?

Thanks @ynishida-style , that's a good title.