Fix effectively ignored XML parameters for SZ operator #6136

Job	Run time
git_checks	5s
format	24s
macos (macos-13, xcode14_2, x64, shared, serial)	10m 4s
ubuntu (ubuntu20.04, gcc8, mpich)	5m 23s
docker (ubuntu-bionic)	6m 53s
macos (macos-14, xcode15_4, arm64, shared, serial)	8m 45s
CodeQL (cpp)	19m 10s
ubuntu (ubuntu20.04, gcc9, mpich)	17m 56s
macos (macos-14, xcode15_4, arm64, static, serial)	2m 59s
ubuntu (ubuntu20.04, gcc10, mpich)	17m 42s
el8 (el8, icc, mpich)	22m 17s
ubuntu (ubuntu20.04, clang6, mpich)	5m 15s
windows (win2019, shared, msmpi)	19m 41s
el8 (el8, oneapi, mpich)	20m 42s
ubuntu (ubuntu20.04, clang10, mpich)	15m 2s
windows (win2022, shared, msmpi)	16m 52s
ubuntu (ubuntu20.04, gcc8, ompi)	36m 16s
windows (win2022, serial, windows-2022, vs2022)	11m 43s
ubuntu (ubuntu20.04, gcc8, serial)	9m 37s
windows (win2022, static, serial, windows-2022, vs2022)	12m 47s
ubuntu (ubuntu20.04, clang6, ompi)	25m 33s
ubuntu (ubuntu20.04, clang6, serial)	8m 13s
ubuntu (ubuntu20.04, gcc8, serial, static)	7m 50s
ubuntu (ubuntu22.04, rocm, serial, build_only)	2m 55s
ubuntu (ubuntu22.04, gcc11, mpich)	16m 30s
contract (examples)	1m 58s
contract (lammps)	4m 0s
contract (tau)	10m 32s
build_and_test	1s
	5h 37m 5s

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