chore: add noexcept to optional_ref #4321

Job	Run time
build (server, debug, true, true)	4m 22s
build (server, debug, true, false)	4m 11s
build (server, debug, false, true)	4m 20s
build (server, debug, false, false)	3m 17s
build (server, release, true, true)	5m 43s
build (server, release, true, false)	5m 27s
build (server, release, false, true)	5m 11s
build (server, release, false, false)	4m 47s
build (client, debug, true, true)	4m 26s
build (client, debug, true, false)	5m 58s
build (client, debug, false, true)	4m 31s
build (client, debug, false, false)	4m 31s
build (client, release, true, true)	3m 17s
build (client, release, true, false)	5m 7s
build (client, release, false, true)	3m 48s
build (client, release, false, false)	5m 23s
	1h 14m 19s

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