[1.5 backport] OccupancySensing: report HoldTime on legacy *OccupiedToUnoccupiedDelay aliases

[j-ororke]

Summary

Backport of the alternative, ember/codegen-based fix (see #71370): when HoldTime changes, report the change not only for HoldTime but for each deprecated *OccupiedToUnoccupiedDelay attribute that is present on the endpoint, so clients subscribed to those legacy attribute IDs also receive a report. Those attributes alias the same value as HoldTime.

Related issues

Tracked by: matter-test-scripts#766
Upstream / reference: #71370

Testing

Build verification (compile the occupancy sensor server in the all-clusters test app without issues):

scripts/run_in_build_env.sh "./scripts/build/build_examples.py --target linux-x64-all-clusters-clang-test gen"
ninja -C out/linux-x64-all-clusters-clang-test obj/third_party/connectedhomeip/src/app/clusters/occupancy-sensor-server/all-clusters-common.occupancy-sensor-server.cpp.o

Ran OCC_2_3 test to cover this change:

scripts/tests/run_python_test.py --factory-reset --app out/linux-x64-all-clusters/chip-all-clusters-app --app-args "--discriminator 1234 --passcode 20202021 --KVS kvs1" --script-args "--storage-path admin_storage.json --discriminator 1234 --passcode 20202021 --PICS src/app/tests/suites/certification/ci-pics-values --endpoint 1 --commissioning-method on-network --bool-arg simulate_occupancy:true" --script src/python_testing/TC_OCC_2_3.py

No issues with running the test with the code changes made, in which this issue was found initially.

[gemini-code-assist]

Code Review

This pull request updates the occupancy sensor server to ensure that changes to the HoldTime attribute are correctly propagated to its deprecated aliases: PIROccupiedToUnoccupiedDelay, UltrasonicOccupiedToUnoccupiedDelay, and PhysicalContactOccupiedToUnoccupiedDelay. The implementation includes a check for the presence of these attributes on the endpoint before triggering the reporting callback. Feedback was provided regarding a redundant line in the source code comments that should be removed to improve readability.