Ensure QVM notebooks use development version of cirq (#7436)

Problem: QVM notebooks use function that is not in stable cirq.
This causes failures in nightly builds of cirq docs.

Solution: Force cirq upgrade if running with stable cirq.

Fixes b/425769714

Author: pavoljuhas

docs/hardware/qubit_picking.ipynb

@@ -94,6 +94,9 @@
     "# @title Setup\n",
     "try:\n",
     "    import cirq\n",
+    "\n",
+    "    # trigger ImportError when cirq is not cirq~=1.0.dev\n",
+    "    from cirq_google.engine import load_device_noise_properties as _\n",
     "except ImportError:\n",
     "    print(\"installing cirq...\")\n",
     "    !pip install --upgrade --quiet cirq~=1.0.dev\n",

docs/simulate/noisy_simulation.ipynb

@@ -83,6 +83,9 @@
    "source": [
     "try:\n",
     "    import cirq\n",
+    "\n",
+    "    # trigger ImportError when cirq is not cirq~=1.0.dev\n",
+    "    from cirq_google.engine import load_device_noise_properties as _\n",
     "except ImportError:\n",
     "    print(\"installing cirq...\")\n",
     "    !pip install --upgrade --quiet cirq~=1.0.dev\n",

docs/simulate/quantum_virtual_machine.ipynb

@@ -98,6 +98,9 @@
     "try:\n",
     "    import cirq\n",
     "    import cirq_google\n",
+    "\n",
+    "    # trigger ImportError when cirq is not cirq~=1.0.dev\n",
+    "    from cirq_google.engine import load_device_noise_properties as _\n",
     "except ImportError:\n",
     "    print(\"installing cirq...\")\n",
     "    !pip install --upgrade --quiet cirq-google~=1.0.dev\n",

docs/simulate/qvm_basic_example.ipynb

@@ -105,6 +105,9 @@
     "try:\n",
     "    import cirq\n",
     "    import cirq_google\n",
+    "\n",
+    "    # trigger ImportError when cirq is not cirq~=1.0.dev\n",
+    "    from cirq_google.engine import load_device_noise_properties as _\n",
     "except ImportError:\n",
     "    print(\"installing cirq...\")\n",
     "    !pip install --upgrade --quiet cirq-google~=1.0.dev\n",