front: change background hovered time table train card #18912

Job	Run time
Check generated railjson sync	22s
Check commits	8s
Check dockerfiles	8s
Build (core-build, core)	26s
Check final newline	15s
Build (editoast, editoast-test)	13s
Build (gateway-test, gateway-standalone, gateway-front)	2m 2s
Check integration tests	1m 27s
Build (front-tests)	2m 39s
Check railjson generator	1m 48s
Check scripts	4s
Build (osrdyne, osrdyne-test)	13s
Check infra schema sync	19s
Check osrd schema	39s
Check reuse compliance	10s
Check toml	9s
Check core	4m 24s
Check editoast tests	7m 0s
Check editoast lints	8m 27s
Check front rtk sync	1m 12s
Check editoast openapi	48s
Check front	3m 6s
Check gateway	3m 31s
Check osrdyne	3m 37s
End to end tests	8m 19s
Integration tests	1m 17s
	52m 43s

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