ci(251): disable rider tests due to CI failures (#5532)

`main` does not run tests so we get failures in CI if we do not also skip them

Author: rli

buildspec/windowsTestsForToolkit.yml

@@ -36,7 +36,7 @@ phases:
         }
 
          # Rider is very expensive (spikes our CI jobs to 50% CPU, so let it do the prep work in parallel, but run tests later
-        ./gradlew -PideProfileName="$Env:ALTERNATIVE_IDE_PROFILE_NAME" :plugin-toolkit:intellij-standalone:check :plugin-toolkit:jetbrains-rider:compileTestKotlin --info --console plain --continue
+        ./gradlew -PideProfileName="$Env:ALTERNATIVE_IDE_PROFILE_NAME" :plugin-toolkit:intellij-standalone:check :plugin-toolkit:jetbrains-rider:compileTestKotlin -x :plugin-toolkit:jetbrains-rider:check --info --console plain --continue
         if ($LastExitCode -ne 0) {
           Write-Host "Command failed with exit code $LastExitCode"
           exit -1