front: fix missing await statements for asynchronous calls #17209

Job	Run time
Check dockerfiles	8s
Check scripts	5s
Check commits	10s
Build (core-build, core)	2m 14s
Build (editoast, editoast-test)	11m 6s
Check final newline	8s
Build (gateway-test, gateway-standalone, gateway-front)	2m 53s
Check generated railjson sync	25s
Build (front-build, front-tests, front-devel, front-nginx)	3m 10s
Check railjson generator	1m 49s
Build (osrdyne, osrdyne-test)	40s
Check infra schema sync	16s
Check integration tests	1m 24s
Check osrd schema	44s
Check reuse compliance	10s
Check toml	5s
Check core	4m 6s
Check editoast lints	8m 36s
Check editoast openapi	41s
Check front rtk sync	1m 7s
Check editoast tests	6m 42s
Check gateway	3m 19s
Check front	3m 4s
Check osrdyne	3m 38s
End to end tests	12m 11s
Integration tests	1m 4s
	1h 9m 55s

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