fix: remove --skip-nx-cache from devtools warm cache step

Allow the warm cache step to use cache for better performance
while keeping skip cache only for the main build step.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: ScriptedAlchemy

.github/workflows/devtools.yml

@@ -53,7 +53,7 @@ jobs:
         run: npx cypress install
 
       - name: Warm Nx Cache
-        run: npx nx run-many --targets=build --projects=tag:type:pkg --parallel=1 --skip-nx-cache
+        run: npx nx run-many --targets=build --projects=tag:type:pkg --parallel=1
 
       - name: Run Affected Build
         run: npx nx run-many --targets=build --projects=tag:type:pkg --parallel=1 --skip-nx-cache