Add `screenshotCacheDuration` to `FlutterOptions` #4130

Job	Run time
Build stable on ubuntu-latest	35s
cancel-previous-workflow	2s
Build beta on ubuntu-latest	24s
Build stable on windows-latest	34s
Build stable on macos-latest	32s
analyze / cancel-previous-workflow	4s
analyze / analyze	49s
analyze / package-analysis	1m 29s
	4m 29s

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