Added default values for keywords to json syntax file #3098

Job	Run time
codecheck / codecheck	44m 57s
conda / conda (ubuntu-20.04)	11m 15s
conda / conda (macos-12)	5m 10s
docker / docker (fedora39)	19m 23s
conda / conda (macos-14)	1m 51s
linux / linux (-doc-mpi-)	40m 57s
docker / docker (rocky8)	22m 43s
linux / linux (-mpi-)	46m 38s
linux / linux (-coverage-mpi-)	1h 0m 18s
linux / linux (-debug-)	28m 39s
mac / macports (macos-12)	16m 0s
linux / linux (-debug-mpi-)	38m 38s
mac / macsimple (macos-12)	13m 1s
mac / macports (macos-14)	3m 43s
linux / linux (-intel-)	50m 22s
mac / macsimple (macos-14)	4m 38s
mac / macports (+allmodules, macos-12)	24m 40s
linux / linux (-pycv-mpi-)	19m 0s
	7h 31m 53s

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