Stop calling Webpacker in full-stack tests (#30763)

.github/workflows/test-ruby.yml

@@ -285,9 +285,13 @@ jobs:
 
       - uses: actions/download-artifact@v4
         with:
-          path: './public'
+          path: './'
           name: ${{ github.sha }}
 
+      - name: Expand archived asset artifacts
+        run: |
+          tar xvzf artifacts.tar.gz
+
       - name: Set up Ruby environment
         uses: ./.github/actions/setup-ruby
         with:
@@ -405,7 +409,7 @@ jobs:
 
       - uses: actions/download-artifact@v4
         with:
-          path: './public'
+          path: './'
           name: ${{ github.sha }}
 
       - name: Set up Ruby environment

spec/support/streaming_server_manager.rb

@@ -80,9 +80,6 @@ end
 RSpec.configure do |config|
   config.before :suite do
     if streaming_examples_present?
-      # Compile assets
-      Webpacker.compile
-
       # Start the node streaming server
       streaming_server_manager.start(port: STREAMING_PORT)
     end