Test on dart2wasm (dart-archive/collection#333)

Author: kevmoo

pkgs/collection/.github/workflows/ci.yml

@@ -61,3 +61,6 @@ jobs:
       - name: Run Chrome tests
         run: dart test --platform chrome --test-randomize-ordering-seed=random
         if: always() && steps.install.outcome == 'success'
+      - name: Run Chrome tests - wasm
+        run: dart test --platform chrome --compiler dart2wasm
+        if: always() && steps.install.outcome == 'success' && matrix.sdk == 'dev'