(WIP) Improve safety calculations in Tessellated solid

[sawenzel]

Optimization: Cache safety and only recalculate when becoming invalid. This works since safety can be underestimated and does not need to be precise. Precise safety evaluation for Tessellated is expensive.

[github-actions]

REQUEST FOR PRODUCTION RELEASES:
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[alibuild]

Error while checking build/O2/fullCI_slc9 for 5afccc8 at 2026-04-15 09:12:

## 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
[9132:BadMapCalibSpec]: [09:12:08][ERROR] Insufficient statistics: 0 entries in lowE histo, do nothing
[9643:qc-task-ITS-ITSTrackTask]: [09:12:24][ERROR] Exception while running: Inconsistent type and payload size at Vertices(DS/tracks1/0): type size 48  payload size 260. Rethrowing.
[9643:qc-task-ITS-ITSTrackTask]: [09:12:24][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 9643 (qc-task-ITS-ITSTrackTask) did not exit correctly however it's not clear why. Exit code forced to 128.
[9486:o2-eve-export]: [09:12:27][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 9643 (exit 128)
[INFO]    - First error: [09:12:24][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 (9643) 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/d47e620973fc2fe7955abf9f05b734507439518f/slc9_x86-64/o2checkcode/1.0-local119/etc/modulefiles
++ cat
--

Full log here.