Replace std::format with fmt::format

[aalkin]

#15188 breaks compilation with the latest Xcode 26.4, std::format fails with non constant expression call to a consteval function. fmt::format is functionally identical and works with Xcode.

[f3sch]

Is this not fixed by #15272 @mpuccio ?

[mpuccio]

@f3sch @aalkin it is, but the PR is still not merged

[alibuild]

Error while checking build/O2/fullCI_slc9 for d535305 at 2026-04-15 18:05:

## sw/BUILD/O2-full-system-test-latest/log
command /sw/slc9_x86-64/O2/slc9_x86-64-slc9_x86-64-local11/prodtests/full-system-test/dpl-workflow.sh had nonzero exit code 1
[9134:BadMapCalibSpec]: [18:05:01][ERROR] Insufficient statistics: 0 entries in lowE histo, do nothing
[9232:qc-task-ITS-ITSTrackTask]: [18:05:16][ERROR] Exception while running: Inconsistent type and payload size at Vertices(DS/tracks1/0): type size 48  payload size 260. Rethrowing.
[9232:qc-task-ITS-ITSTrackTask]: [18:05:16][FATAL] Unhandled o2::framework::runtime_error reached the top of main of o2-qc, device shutting down. Reason: Inconsistent type and payload size at Vertices(DS/tracks1/0): type size 48  payload size 260
[ERROR] Workflow crashed - PID 9232 (qc-task-ITS-ITSTrackTask) did not exit correctly however it's not clear why. Exit code forced to 128.
[9211:o2-eve-export]: [18:05:19][ERROR] filesystem problem during DirectoryLoader::canCreateNextFile: filesystem error: directory iterator cannot open directory: No such file or directory [jsons]
[ERROR]  - Device qc-task-ITS-ITSTrackTask: pid 9232 (exit 128)
[INFO]    - First error: [18:05:16][FATAL] Unhandled o2::framework::runtime_error reached the top of main of o2-qc, device shutting down. Reason: Inconsistent type and payload size at Vertices(DS/tracks1/0): type size 48  payload size 260
[ERROR] SEVERE: Device qc-task-ITS-ITSTrackTask (9232) had at least one message above severity 7: Unhandled o2::framework::runtime_error reached the top of main of o2-qc, device shutting down. Reason: Inconsistent type and payload size at Vertices(DS/tracks1/0): type size 48  payload size 260


## sw/BUILD/o2checkcode-latest/log
--
========== List of errors found ==========
++ GRERR=0
++ grep -v clang-diagnostic-error error-log.txt
++ grep ' error:'
++ GRERR=1
++ [[ 1 == 0 ]]
++ mkdir -p /sw/INSTALLROOT/4e0df10affff7890fa7816e0c51d4c11b5c8fe35/slc9_x86-64/o2checkcode/1.0-local73/etc/modulefiles
++ cat
--

Full log here.