Avoid duplicate Pages cache writes

Let the CI workflow own uv cache uploads while the Pages workflow remains read-only, eliminating the parallel cache reservation warning.

Author: VatsalSy

.github/workflows/pages.yml

@@ -25,6 +25,7 @@ jobs:
         uses: astral-sh/setup-uv@11f9893b081a58869d3b5fccaea48c9e9e46f990 # v8.3.2
         with:
           enable-cache: true
+          save-cache: false
 
       - name: Install Python
         run: uv python install 3.12