Fix examples workflow yalc publish command

Changes `yarn yalc publish` to `yarn run yalc:publish`.

The command `yarn yalc publish` tries to run the yalc binary directly,
which fails. The correct command is `yarn run yalc:publish` which runs
the npm script defined in package.json that publishes all workspace
packages via `yarn workspaces run yalc:publish`.

This was causing Generator tests to fail because packages weren't
being published to yalc correctly.

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

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

Author: justin808

.github/workflows/examples.yml

@@ -147,7 +147,7 @@ jobs:
       - name: yalc publish for react-on-rails
         # Use yarn workspace script to publish all workspace packages to yalc
         # Runs the "yalc:publish" script defined in each workspace's package.json
-        run: yarn yalc publish
+        run: yarn run yalc:publish
       - name: Install Ruby Gems for package
         run: |
           cd react_on_rails