test(e2e): count the model attachment cache among compiler caches

Author: kvlonge

tests/e2e/src/sqlbuild/cli/commands/main/build/test_runtime_artifact_preservation.py

@@ -32,7 +32,7 @@
                 "target/run/functions/python/is_completed_order_py.sql",
             ),
             expected_exit_code=0,
-            expected_compiler_cache_count=4,
+            expected_compiler_cache_count=5,
             expected_local_history=False,
             expected_compiled_paths=(
                 "target/compiled/models/marts/fact_orders.sql",