Default TPC loopers in o2-sim

[jackal1-66]

TPC loopers are currently injected via an O2DPG external generator by creating a cocktail. This development feeds them automatically in case the TPC detector is used and transported. A collisioncontext.root file is mandatory, otherwise the loopers will be automatically turned off. In addition the GenTPCLoopers.loopersVeto parameter has been introduced to forcefully turn off the injection. This PR is linked to https://github.com/AliceO2Group/O2DPG/pull/2191, in which the collision system is automatically fed to the sgnsim step

[github-actions[bot]]

REQUEST FOR PRODUCTION RELEASES: To request your PR to be included in production software, please add the corresponding labels called "async-" to your PR. Add the labels directly (if you have the permissions) or add a comment of the form (note that labels are separated by a ",")

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[alibuild]

Error while checking build/O2/fullCI_slc9 for 797f283e8954fccb52e2854d31eecfe4d480254e at 2025-11-25 09:12:

## sw/BUILD/O2-latest/log
CMake Error at cmake/AddRootDictionary.cmake:91 (message):

Full log here.

[alibuild]

Error while checking build/O2/fullCI_slc9 for 76f999637a7bdff042d39635db039efdb4c56337 at 2025-12-03 15:26:

## sw/BUILD/o2checkcode-latest/log
--
========== List of errors found ==========
++ GRERR=0
++ grep -v clang-diagnostic-error error-log.txt
++ grep ' error:'
/sw/SOURCES/O2/14851-slc9_x86-64/0/Generators/src/TPCLoopers.cxx:49:30: error: statement should be inside braces [readability-braces-around-statements]
/sw/SOURCES/O2/14851-slc9_x86-64/0/Generators/src/TPCLoopers.cxx:51:9: error: statement should be inside braces [readability-braces-around-statements]
/sw/SOURCES/O2/14851-slc9_x86-64/0/Generators/src/TPCLoopers.cxx:83:20: error: statement should be inside braces [readability-braces-around-statements]
++ [[ 0 == 0 ]]
++ exit 1
--

Full log here.

[jackal1-66]

I implemented all the comments and retested the code.

[github-actions[bot]]

This PR did not have any update in the last 30 days. Is it still needed? Unless further action in will be closed in 5 days.

[jackal1-66]

The failing CI is unrelated to this PR:

522/522 Test  #29: test_GPUsortCUDA .....................................................................***Failed    0.02 sec
Running 4 test cases...
ErrorCode 35 cudaErrorInsufficientDriver: CUDA driver version is insufficient for CUDA runtime version

@ktf @singiamtel could you please check what's wrong with that specific test? I see that it's failing in other PRs as well