CSVMC effectively untested due to WALKER_MAX_PROPERTIES
Describe the bug
The CSVMC tests e.g. https://cdash.qmcpack.org/CDash/testDetails.php?test=9832855&build=141686 fail with default builds due to the WALKER_MAX_PROPERTIES workaround/problem. This means they are effectively untested since all the nightly/weekly tests use the default.
If a "reasonable" WALKER_MAX_PROPERTIES is identified we could update the builds, otherwise we'll have to wait for WALKER_MAX_PROPERTIES to be redesigned/refactored away. The next person interested in CSVMC should experiment and add comments here.
To Reproduce
Current develop, ctest -R csvmc
Expected behavior
Test should run to completion and pass/fail.
System:
All the systems and builds reporting to cdash regularly
Additional context
See also #2509