front: use matchPathStepAndOp() in TimesStopsInput's clearPathStep() #14717

Job	Run time
Build (core-build, core)	34s
Check dockerfiles	8s
Build (editoast, editoast-test)	7m 51s
Build (gateway-test, gateway-standalone, gateway-front)	2m 50s
Build (front-build, front-tests, front-devel, front-nginx)	2m 59s
Check generated railjson sync	31s
Build (osrdyne, osrdyne-test)	18s
Check railjson generator	1m 59s
Check scripts	16s
Check commits	9s
Check final newline	13s
Check integration tests	1m 27s
Check infra schema sync	15s
Check osrd schema	39s
Check reuse compliance	12s
Check toml	9s
Check front rtk sync	1m 29s
Check core	4m 12s
Check editoast lints	9m 7s
Check editoast openapi	1m 3s
Check editoast tests	6m 27s
Check front	2m 45s
Check gateway	3m 24s
Check osrdyne	3m 45s
End to end tests	12m 8s
Integration tests	1m 20s
	1h 6m 10s

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