Fix notebook: Better mitigation of the ANSI_X3.4-1968 problem in Colab

Colab is easily broken by openmm and other software messing with locale.
This mitigation patch lets the %shell and ! work again.
It is much stronger solution than just avoiding shell when making zip.

notebooks/OpenFold.ipynb

@@ -249,6 +249,13 @@
         "import torch\n",
         "import shutil\n",
         "\n",
+        "# Prevent shell magic being broken by openmm, prevent this cryptic error:\n",
+        "# \"NotImplementedError: A UTF-8 locale is required. Got ANSI_X3.4-1968\"\n",
+        "import locale\n",
+        "def getpreferredencoding(do_setlocale = True):\n",
+        "    return \"UTF-8\"\n",
+        "locale.getpreferredencoding = getpreferredencoding\n",
+        "\n",
         "# A filthy hack to avoid slow Linear layer initialization\n",
         "import openfold.model.primitives\n",
         "\n",