GPU: Array add fill method

[f3sch]

Adds a fill method to the std::array alias.

[github-actions]

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[alibuild]

Error while checking build/O2/fullCI_slc9 for b345031 at 2025-04-02 22:51:

## sw/BUILD/O2Physics-latest/log
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:


## sw/BUILD/O2-sim-challenge-test-latest/log
./sim-challenge.logDetected critical problem in logfile mftreco.log
./sim-challenge.logmftreco.log:[11417:internal-dpl-ccdb-backend]: [22:51:39][ERROR] Exception while running: Fatal error. Rethrowing.
./sim-challenge.logmftreco.log-[11417:internal-dpl-ccdb-backend]: [22:51:39][FATAL] Unhandled o2::framework::runtime_error reached the top of main of o2-mft-reco-workflow, device shutting down. Reason: Fatal error
./sim-challenge.log[11417:internal-dpl-ccdb-backend]: [22:51:39][ERROR] CCDBDownloader CURL transfer error - Timeout was reached
./sim-challenge.log[11417:internal-dpl-ccdb-backend]: [22:51:39][ERROR] CcdbDownloader finished transfer http://alice-ccdb.cern.ch/GLO/Config/GRPECS for 1546300800000 (agent_id: alimetal04.cern.ch-1743627094-xbzvh7) with http code: 0
./sim-challenge.log[11417:internal-dpl-ccdb-backend]: [22:51:39][ERROR] File GLO/Config/GRPECS could not be retrieved. No more hosts to try.
./sim-challenge.log[11417:internal-dpl-ccdb-backend]: [22:51:39][FATAL] Unable to find CCDB object GLO/Config/GRPECS/1546300800000
./sim-challenge.log[11417:internal-dpl-ccdb-backend]: [22:51:39][ERROR] Exception while running: Fatal error. Rethrowing.
./sim-challenge.log[11417:internal-dpl-ccdb-backend]: [22:51:39][FATAL] Unhandled o2::framework::runtime_error reached the top of main of o2-mft-reco-workflow, device shutting down. Reason: Fatal error
./sim-challenge.log[ERROR] Workflow crashed - PID 11417 (internal-dpl-ccdb-backend) did not exit correctly however it's not clear why. Exit code forced to 128.
./sim-challenge.log[ERROR]  - Device internal-dpl-ccdb-backend: pid 11417 (exit 128)
./sim-challenge.log[INFO]    - First error: [22:51:39][FATAL] Unable to find CCDB object GLO/Config/GRPECS/1546300800000
./sim-challenge.log[ERROR] SEVERE: Device internal-dpl-ccdb-backend (11417) had at least one message above severity 7: Unable to find CCDB object GLO/Config/GRPECS/1546300800000
./digi.log[ERROR] Found duplicate input binding with different spec.:collisioncontext {SIM/COLLISIONCONTEXT/37}
./digi.log[ERROR] Found duplicate input binding with different spec.:collisioncontext {SIM/COLLISIONCONTEXT/38}
./digi.log[ERROR] Found duplicate input binding with different spec.:collisioncontext {SIM/COLLISIONCONTEXT/40}
./digi.log[ERROR] Found duplicate input binding with different spec.:collisioncontext {SIM/COLLISIONCONTEXT/42}
./digi.log[ERROR] Found duplicate input binding with different spec.:collisioncontext {SIM/COLLISIONCONTEXT/43}
./digi.log[ERROR] Found duplicate input binding with different spec.:collisioncontext {SIM/COLLISIONCONTEXT/45}
./digi.log[ERROR] Found duplicate input binding with different spec.:collisioncontext {SIM/COLLISIONCONTEXT/46}
./digi.log[ERROR] Found duplicate input binding with different spec.:collisioncontext {SIM/COLLISIONCONTEXT/47}
./digi.log[ERROR] Found duplicate input binding with different spec.:collisioncontext {SIM/COLLISIONCONTEXT/48}
./digi.log[ERROR] Found duplicate input binding with different spec.:collisioncontext {SIM/COLLISIONCONTEXT/49}
./digi.log[6178:internal-dpl-ccdb-backend]: [ERROR] Found duplicate input binding with different spec.:collisioncontext {SIM/COLLISIONCONTEXT/37}
./digi.log[6178:internal-dpl-ccdb-backend]: [ERROR] Found duplicate input binding with different spec.:collisioncontext {SIM/COLLISIONCONTEXT/38}
./digi.log[6178:internal-dpl-ccdb-backend]: [ERROR] Found duplicate input binding with different spec.:collisioncontext {SIM/COLLISIONCONTEXT/40}
./digi.log[6178:internal-dpl-ccdb-backend]: [ERROR] Found duplicate input binding with different spec.:collisioncontext {SIM/COLLISIONCONTEXT/42}
[0 more errors; see full log]

Full log here.