enable browser JS tests on CI;

Author: greenhat

.github/workflows/ci.yml

@@ -158,12 +158,12 @@ jobs:
           npm install
           npm run test
       
-      # - name: run browser JS tests
-      #   run: |
-      #     cd bindings/ergo-lib-wasm
-      #     wasm-pack build
-      #     npm install
-      #     npm run test-browser
+      - name: run browser JS tests
+        run: |
+          cd bindings/ergo-lib-wasm
+          wasm-pack build
+          npm install
+          npm run test-browser
 
       - name: build alpha versions
         run: |