layers: Do not create wait timepoint after signal retired #9681

Job	Run time
code-format	26s
check_vvl	1m 2s
androidOnLinux	3m 0s
chromium (target_os="linux" target_cpu="x64")	7m 44s
linux (address sanitizer, debug, robinhood ON )	29m 59s
chromium (target_os="android" target_cpu="arm64")	10m 54s
android (arm64-v8a, ON, c++_shared)	8m 17s
linux (address sanitizer, release, robinhood ON )	14m 14s
android (armeabi-v7a, OFF, c++_static)	1m 17s
linux (address sanitizer, release, robinhood OFF )	15m 5s
Ubuntu Backcompat	7m 48s
linux (thread sanitizer, release, robinhood ON )	5m 33s
mingw	1m 50s
windows (amd64)	10m 36s
windows (amd64_x86)	9m 49s
iOS	2m 59s
androidUpload	0s
windowsUpload	0s
linux Upload	0s
	2h 10m 33s

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