fix: fix EffectDuration struct #4453

Job	Run time
build (server, debug, true, true)	2m 47s
build (server, debug, true, false)	2m 41s
build (server, debug, false, true)	3m 37s
build (server, debug, false, false)	3m 24s
build (server, release, true, true)	3m 34s
build (server, release, true, false)	2m 54s
build (server, release, false, true)	3m 35s
build (server, release, false, false)	3m 2s
build (client, debug, true, true)	4m 11s
build (client, debug, true, false)	2m 16s
build (client, debug, false, true)	4m 26s
build (client, debug, false, false)	2m 53s
build (client, release, true, true)	4m 25s
build (client, release, true, false)	2m 57s
build (client, release, false, true)	4m 37s
build (client, release, false, false)	3m 25s
	54m 44s

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