Add equality operator for JsonValue #2665

Job	Run time
Quick Checks	7s
windows-2019 / Debug	24m 17s
ubuntu-22.04 / gcc / Debug	21m 10s
windows-2019 / RelWithDebInfo	27m 31s
Documentation	12m 2s
ubuntu-22.04 / gcc / RelWithDebInfo	27m 7s
windows-2022 / Debug	23m 20s
ubuntu-20.04 / clang / Debug	20m 10s
windows-2022 / RelWithDebInfo	27m 53s
ubuntu-20.04 / clang / RelWithDebInfo	24m 57s
macos-12 / clang / Debug	27m 24s
macos-12 / clang / RelWithDebInfo	23m 16s
	4h 19m 14s

Provide feedback