Add equality operator to JsonValue #2666

Job	Run time
Documentation	12m 1s
Quick Checks	9s
ubuntu-22.04 / gcc / Debug	25m 2s
windows-2022 / Debug	26m 13s
ubuntu-22.04 / gcc / RelWithDebInfo	28m 36s
windows-2022 / RelWithDebInfo	29m 53s
ubuntu-20.04 / clang / Debug	20m 57s
ubuntu-20.04 / clang / RelWithDebInfo	26m 5s
macos-15 / clang / Debug	1h 5m 5s
macos-15 / clang / RelWithDebInfo	1h 10m 10s
	5h 4m 11s

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