fix: make pylance optional again (#2209)

The two remaining blockers were:

* A method `with_embeddings` that was deprecated a year ago
* A typecheck for `LanceDataset`

.github/workflows/python.yml

@@ -13,6 +13,11 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
   cancel-in-progress: true
 
+env:
+  # Color output for pytest is off by default.
+  PYTEST_ADDOPTS: "--color=yes"
+  FORCE_COLOR: "1"
+
 jobs:
   lint:
     name: "Lint"
@@ -131,6 +136,10 @@ jobs:
       - uses: ./.github/workflows/run_tests
         with:
           integration: true
+      - name: Test without pylance
+        run: |
+          pip uninstall -y pylance
+          pytest -vv python/tests/test_table.py
       # Make sure wheels are not included in the Rust cache
       - name: Delete wheels
         run: rm -rf target/wheels