core: take step planned timing data into account in block availability #8238

Job	Run time
check_railjson_generator	1m 46s
check_commits	5s
check_generated_railjson_sync	28s
build (core-build, core)	2m 36s
check_integration_tests	1m 34s
check_osrd_schema	39s
build (editoast, editoast-test)	15s
build (gateway-test, gateway-standalone, gateway-front)	1m 52s
Check final newline	10s
check_infra_schema_sync	19s
build (front-build, front-tests, front-devel, front-nginx)	27s
check_toml	9s
check_editoast_lints	5m 13s
check_editoast_openapi	1m 28s
check_core	4m 20s
check_editoast_tests	5m 47s
check_front	2m 40s
check_front_rtk_sync	1m 31s
check_gateway	2m 12s
integration_tests	5m 15s
	38m 46s

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