Update react_on_rails to 16.0.1.rc.4 to fix yanked version issue

The exact version 15.0.0 was yanked from RubyGems, causing CI failures.
Updated to 16.0.1.rc.4 which is available and stable.

Author: ihabadham

react_on_rails_pro/.claude/settings.local.json

@@ -0,0 +1,17 @@
+{
+  "permissions": {
+    "allow": [
+      "WebFetch(domain:github.com)",
+      "Bash(gh pr view:*)",
+      "Bash(gh run view:*)",
+      "Bash(gh pr list:*)",
+      "Bash(gh pr diff:*)",
+      "Bash(bundle update:*)",
+      "Bash(bundle check:*)",
+      "Bash(git add:*)",
+      "Bash(git commit:*)"
+    ],
+    "deny": [],
+    "ask": []
+  }
+}

react_on_rails_pro/Gemfile.local.backup

@@ -0,0 +1 @@
+gem "react_on_rails", github: "shakacode/react_on_rails", branch: "abanoubghadban/restrict-usage-of-pro-features-to-rorp-licence"