Fix work item exit code for helix tests (dotnet#45164)

* Fix work item exit code for helix tests

The helix work items are only supposed to return non-zero if they fail
to report tests for some reason.

* Fix if

eng/testing/RunnerTemplate.cmd

@@ -56,7 +56,13 @@ pushd %EXECUTION_DIR%
 @echo off
 popd
 echo ----- end %DATE% %TIME% ----- exit code %ERRORLEVEL% ----------------------------------------------------------
-exit /b %ERRORLEVEL%
+:: The helix work item should not exit with non-zero if tests ran and produced results
+:: The special console runner for runtime returns 1 when tests fail
+if %ERRORLEVEL%==1 (
+  exit /b 0
+) else (
+  exit /b %ERRORLEVEL%
+)
 :: ========================= END Test Execution =================================
 
 :usage

eng/testing/RunnerTemplate.sh

@@ -204,4 +204,10 @@ if [[ "$(uname -s)" == "Linux" && $test_exitcode -ne 0 ]]; then
 fi
 popd >/dev/null
 # ======================== END Core File Inspection ==========================
-exit $test_exitcode
+# The helix work item should not exit with non-zero if tests ran and produced results
+# The special console runner for runtime returns 1 when tests fail
+if [ "$test_exitcode" == "1" ]; then
+  exit 0
+else
+  exit $test_exitcode
+fi