tests: add (xfail) ETCS braking curve integration test #17250

Job	Run time
Check dockerfiles	8s
Build (core-build, core)	2m 11s
Build (editoast, editoast-test)	19s
Build (gateway-test, gateway-standalone, gateway-front)	2m 25s
Check scripts	3s
Build (front-build, front-tests, front-devel, front-nginx)	2m 13s
Build (osrdyne, osrdyne-test)	26s
Check commits	7s
Check final newline	8s
Check railjson generator	1m 53s
Check generated railjson sync	26s
Check toml	4s
Check infra schema sync	21s
Check integration tests	1m 23s
Check osrd schema	44s
Check reuse compliance	9s
Check editoast lints	8m 40s
Check editoast tests	7m 10s
Check core	4m 0s
Check editoast openapi	34s
Check front rtk sync	1m 6s
Check front	3m 1s
Check gateway	3m 23s
Check osrdyne	3m 45s
End to end tests	13m 38s
Integration tests	1m 6s
	59m 23s

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