Implement mandatory sidestake output checking in ClaimValidator #1823

Job	Run time
macOS 12 native [GOAL install] [GUI] [no depends]	14m 20s
Lint	43s
ARM [GOAL install] [buster]	2m 6s
Win32	3m 8s
Win64	4m 47s
i386 Linux [GOAL install] [focal]	1m 46s
x86_64 Linux [GOAL install] [GUI] [focal] [no depends]	13m 6s
x86_64 Linux [GOAL install] [GUI] [bionic] [no depends]	13m 58s
macOS 10.14 [GOAL deploy] [GUI] [no tests] [focal]	9m 21s
	1h 3m 15s

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