add test that chia is installed when in ci (#17223)

* add test that chia is installed when in ci

* Update test_installed.py

tests/util/test_installed.py

@@ -0,0 +1,20 @@
+from __future__ import annotations
+
+import os
+import pathlib
+
+import pytest
+
+import chia
+
+
+@pytest.mark.skipif(condition=os.environ.get("CI") is None, reason="Skip outside CI")
+def test_chia_installed() -> None:
+    """This checks that the in-memory chia package was loaded from an installed copy
+    and not the not-installed source code.  This is relevant because it makes our
+    tests exercise the code and support files from our wheel which can differ from
+    the source.  We have missed some source files and also some data files in the past
+    and testing the installed code checks for that.  A next step would be to install
+    using the actual wheel file we are going to publish.
+    """
+    assert "venv" in pathlib.Path(chia.__file__).parts