Tests are not running on Ubuntu CI builds

[josephmyers]

Automated tests are not actually being run on the build server for Ubuntu, though it would appear otherwise. If you look at the relevant build step, you'll see

Run dotnet test --configuration Release --no-build --filter TestCategory!=RequiresDisplay -- NUnit.TestOutputXml=TestResults
dotnet test --configuration Release --no-build --filter TestCategory!=RequiresDisplay -- NUnit.TestOutputXml=TestResults
shell: /usr/bin/bash -e {0}
env:
DOTNET_ROOT: /home/runner/.dotnet
GitVersion_Major: 8
GitVersion_Minor: 0
GitVersion_Patch: 0
GitVersion_PreReleaseTag: beta.4
GitVersion_PreReleaseTagWithDash: -beta.4
GitVersion_PreReleaseLabel: beta
GitVersion_PreReleaseLabelWithDash: -beta
GitVersion_PreReleaseNumber: 4
GitVersion_WeightedPreReleaseNumber: 55004
GitVersion_FullBuildMetaData: Branch.master.Sha.5545cb61911360dbc0b4a3a71b6fd08e52d50b60
GitVersion_MajorMinorPatch: 8.0.0
GitVersion_SemVer: 8.0.0-beta.4
GitVersion_LegacySemVer: 8.0.0-beta4
GitVersion_LegacySemVerPadded: 8.0.0-beta0004
GitVersion_AssemblySemVer: 8.0.0.0
GitVersion_AssemblySemFileVer: 8.0.0.0
GitVersion_FullSemVer: 8.0.0-beta.4
GitVersion_InformationalVersion: 8.0.0-beta.4+Branch.master.Sha.5545cb61911360dbc0b4a3a71b6fd08e52d50b60
GitVersion_BranchName: master
GitVersion_EscapedBranchName: master
GitVersion_Sha: 5545cb6
GitVersion_ShortSha: 5545cb6
GitVersion_NuGetVersionV2: 8.0.0-beta0004
GitVersion_NuGetVersion: 8.0.0-beta0004
GitVersion_NuGetPreReleaseTagV2: beta0004
GitVersion_NuGetPreReleaseTag: beta0004
GitVersion_VersionSourceSha: 48700dc
GitVersion_CommitsSinceVersionSource: 4
GitVersion_CommitsSinceVersionSourcePadded: 0004
GitVersion_UncommittedChanges: 0
GitVersion_CommitDate: 2024-05-10

and that's it. In my work here, I was able to get them running, but there were multiple failures, so I removed that part to improve clarity. If we want them running as part of CI in the long run (probably a good idea), we can use this issue to track that effort. Otherwise, we can close this.