Minor improvements of AppState management in editoast #15443

Job	Run time
Check dockerfiles	9s
Build (core-build, core)	22s
Check generated railjson sync	32s
Build (editoast, editoast-test)	8m 38s
Build (gateway-test, gateway-standalone, gateway-front)	1m 0s
Check scripts	4s
Build (front-build, front-tests, front-devel, front-nginx)	21s
Check commits	8s
Build (osrdyne, osrdyne-test)	26s
Check railjson generator	1m 57s
Check final newline	8s
Check integration tests	1m 29s
Check osrd schema	57s
Check infra schema sync	18s
Check reuse compliance	34s
Check toml	9s
Check front rtk sync	1m 15s
Check core	4m 14s
Check editoast lints	9m 14s
Check editoast openapi	44s
Check editoast tests	7m 4s
Check front	3m 22s
Check osrdyne	3m 50s
Check gateway	3m 31s
End to end tests	15m 33s
Integration tests	1m 17s
	1h 7m 16s

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