meta(reqs): add back the macos extra specifiers for tensorflow.

pyproject.toml

@@ -54,10 +54,9 @@
         "auto-intersphinx",
         "sphinxcontrib-programoutput",
         "matplotlib",
-        # dev-profile constraints will set the extras of tensorflow and
-        # tensorflow-macos according to the current OS. Leave both deps in here:
-        "tensorflow",
-        "tensorflow-macos",
+        "tensorflow; sys_platform != 'darwin'",
+        "tensorflow-macos; sys_platform == 'darwin'",
+
         ]
     test = [
         "pytest",