Fix: Disable yarn caching in examples workflow to prevent V8 crash

The examples.yml workflow was experiencing Node.js V8 crashes during
yarn cache dir commands, similar to the issue fixed in commit a1c71ea.
This commit applies the same fix - disabling yarn caching until the
upstream V8 issue is resolved.

Error observed:
```
# Fatal error in , line 0
# unreachable code
```

Tracking: actions/setup-node#1028

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

Co-Authored-By: Claude <[email protected]>

Author: justin808

.github/workflows/examples.yml

@@ -66,8 +66,10 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: 20
-          cache: yarn
-          cache-dependency-path: '**/yarn.lock'
+          # TODO: Re-enable yarn caching once Node.js V8 cache crash is fixed
+          # Tracking: https://github.com/actions/setup-node/issues/1028
+          # cache: yarn
+          # cache-dependency-path: '**/yarn.lock'
       - name: Print system information
         run: |
           echo "Linux release: "; cat /etc/issue