fix: use correct EDM headers in TruthEnergyPositionClusterMerger

[wdconinc]

Briefly, what does this PR introduce?

This PR ensures that we are including collection headers in TruthEnergyPositionClusterMerger, not just data type headers.

What kind of change does this PR introduce?

• [x] Bug fix (issue #__)
• [ ] New feature (issue #__)
• [ ] Documentation update
• [ ] Other: __

Please check if this PR fulfills the following:

• [ ] Tests for the changes have been added
• [ ] Documentation has been added / updated
• [ ] Changes have been communicated to collaborators

Does this PR introduce breaking changes? What changes might users need to make to their code?

No.

Does this PR change default behavior?

No.

[github-actions[bot]]

Capybara summary for PR 1484

• rec_dis_10x100_minQ2=0_craterlake
• rec_dis_10x100_minQ2=1000_craterlake
• rec_dis_18x275_minQ2=0_craterlake
• rec_dis_18x275_minQ2=1000_craterlake
• rec_dis_5x41_minQ2=0_craterlake
• rec_e_1GeV_20GeV_craterlake
• rec_pi_1GeV_20GeV_craterlake ^{_{Last updated 2024-06-03T17:52-04:00 bb310c8477200100d758e4fa9280225a2e624101}}