Simulate missing _pyrepl for CI

Author: zooba

Lib/_pyrepl/__init__.py

@@ -17,3 +17,5 @@
 # RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
 # CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 # CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+raise ModuleNotFoundError("Simulated absence")