fix(build): use local spawn strategy to allow network access during prerender

macOS sandbox blocks network access during prerendering, causing Algolia
API calls to fail. Using local spawn strategy allows network access for
all builds.

Author: lacolaco

.bazelrc

@@ -8,3 +8,7 @@ build --verbose_failures=true
 
 # CI supports colors but Bazel does not detect it.
 common --color=yes
+
+# Sandbox blocks network access during prerendering (Algolia API calls).
+# Use local spawn strategy to allow network access.
+build --spawn_strategy=local