[PWGJE] trackEfficiency: use true track weight for numerator for fake tracks

[aimeric-landou]

No description provided.

[github-actions]

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

[alibuild]

Error while checking build/O2Physics/o2 for 995f540 at 2025-06-06 16:13:

## sw/BUILD/O2Physics-latest/log
/sw/SOURCES/O2Physics/11493-slc9_x86-64/0/PWGJE/Tasks/trackEfficiency.cxx:561:39: error: 'weight' was not declared in this scope
/sw/SOURCES/O2Physics/11493-slc9_x86-64/0/PWGJE/Tasks/trackEfficiency.cxx:562:13: error: 'jet' was not declared in this scope; did you mean 'o2::aod::jet'?
/sw/SOURCES/O2Physics/11493-slc9_x86-64/0/PWGJE/Tasks/trackEfficiency.cxx:562:24: error: 'pTHatMaxMCD' was not declared in this scope; did you mean 'ptHatMax'?
/sw/SOURCES/O2Physics/11493-slc9_x86-64/0/PWGJE/Tasks/trackEfficiency.cxx:562:55: error: 'pTHatAbsoluteMin' was not declared in this scope
ninja: build stopped: subcommand failed.

Full log here.

[alibuild]

Error while checking build/O2Physics/o2 for bf88717 at 2025-06-06 23:17:

## sw/BUILD/O2Physics-latest/log
/sw/SOURCES/O2Physics/11493-slc9_x86-64/0/PWGJE/Tasks/trackEfficiency.cxx:561:39: error: 'weight' was not declared in this scope
/sw/SOURCES/O2Physics/11493-slc9_x86-64/0/PWGJE/Tasks/trackEfficiency.cxx:562:13: error: 'jet' was not declared in this scope; did you mean 'o2::aod::jet'?
ninja: build stopped: subcommand failed.

Full log here.