Optimize Playwright installation to only use Chromium

- Modified GitHub workflow to only install Chromium browser instead of all browsers
- Speeds up CI workflow by reducing download and installation time
- Matches the existing Playwright configuration which already only uses Chromium

Co-Authored-By: sketch
'npx playwright install --with-deps' is kinda slow; can you modify things so we only install chromium
diff --git a/.github/workflows/webui_test.yml b/.github/workflows/webui_test.yml
index 86fbcc5..1964cb2 100644
--- a/.github/workflows/webui_test.yml
+++ b/.github/workflows/webui_test.yml
@@ -27,9 +27,9 @@
         working-directory: ./loop/webui
         run: npm ci
 
-      - name: Install Playwright browsers
+      - name: Install Playwright Chromium
         working-directory: ./loop/webui
-        run: npx playwright install --with-deps
+        run: npx playwright install chromium --with-deps
 
       - name: Run tests
         working-directory: ./loop/webui