Fix tests: replace MXENV_UV_GLOBAL with UV_PYTHON

- Update test_parser.py to use UV_PYTHON instead of MXENV_UV_GLOBAL
- Update test_templates.py to use UV_PYTHON instead of MXENV_UV_GLOBAL
- Both tests now pass with new mxenv.mk implementation

Author: jensens

src/mxmake/tests/test_parser.py

@@ -21,7 +21,7 @@ def test_MakefileParser(self, tempdir):
             "core.mxenv.PRIMARY_PYTHON": "python3",
             "core.mxenv.PYTHON_MIN_VERSION": "3.7",
             "core.mxenv.PYTHON_PACKAGE_INSTALLER": "pip",
-            "core.mxenv.MXENV_UV_GLOBAL": "false",
+            "core.mxenv.UV_PYTHON": "",
             "core.mxenv.VENV_ENABLED": "true",
             "core.mxenv.VENV_CREATE": "true",
             "core.mxenv.VENV_FOLDER": "venv",
@@ -67,7 +67,7 @@ def test_MakefileParser(self, tempdir):
                 "core.mxenv.PRIMARY_PYTHON": "python3",
                 "core.mxenv.PYTHON_MIN_VERSION": "3.7",
                 "core.mxenv.PYTHON_PACKAGE_INSTALLER": "pip",
-                "core.mxenv.MXENV_UV_GLOBAL": "false",
+                "core.mxenv.UV_PYTHON": "",
                 "core.mxenv.VENV_ENABLED": "true",
                 "core.mxenv.VENV_CREATE": "true",
                 "core.mxenv.VENV_FOLDER": "venv",

src/mxmake/tests/test_templates.py

@@ -564,7 +564,7 @@ def test_Makefile(self, tempdir):
             "core.mxenv.PRIMARY_PYTHON": "python3",
             "core.mxenv.PYTHON_MIN_VERSION": "3.9",
             "core.mxenv.PYTHON_PACKAGE_INSTALLER": "pip",
-            "core.mxenv.MXENV_UV_GLOBAL": "false",
+            "core.mxenv.UV_PYTHON": "",
             "core.mxenv.VENV_ENABLED": "true",
             "core.mxenv.VENV_CREATE": "true",
             "core.mxenv.VENV_FOLDER": ".venv",