[GNC] "31 tests failed out of 128" in Ubuntu 24.04

[Dong Lin]

With release 5.11 under Ubuntu 24.04, all 31 failed with this error:
Loading guile/site file from outside build tree! "/usr/share/guile/site/3.0/gnucash/options.scm"
This used to pass in 5.9 under Ubuntu 22.04. Now even 5.9 failed with the same error in Ubuntu 24.04.
When I disable this check, all 128 tests passed. but loading the installed version of options.scm seems wrong.
Does this mean I must remove the installed gnucash in order to run the build binaries properly? Is there a way to run the tests strictly within the build directory?
Thanks