[Misc] Apply SonarCloud rule cpp:S6003

SonarCloud rule fix

• Rule name: Replace this use of "push_back" with "emplace_back".
• Rule code: cpp:S6003
• Rule link: https://sonarcloud.io/project/issues?open=AY7x-fhfV9P8dXPocgMR&id=cern-cta_CTA

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