Update e2e-futurehouse-structure.yaml

Author: KRRT7

.github/workflows/e2e-futurehouse-structure.yaml

@@ -70,5 +70,7 @@ jobs:
 
       - name: Run Codeflash to optimize code
         id: optimize_code
+        env:
+          PYTHONUTF8: 1
         run: |
           uv run tests/scripts/end_to_end_test_futurehouse.py