Fix React on Rails compatibility by using stable 14.2.1 version

- Change from 16.0.1.rc.0/16.0.0 to 14.2.1 due to Shakapacker compatibility issues
- React on Rails 16 has breaking changes that cause PackerUtils.packer_type nil errors
- Version 14.2.1 is stable and works correctly with Shakapacker 8.0.0

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

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

Author: justin808

Gemfile

@@ -5,7 +5,7 @@ git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
 ruby "3.3.4"
 
-gem "react_on_rails", "16.0.1.rc.0"
+gem "react_on_rails", "14.2.1"
 gem "shakapacker", "8.0.0"
 
 # Bundle edge Rails instead: gem "rails", github: "rails/rails"

Gemfile.lock

@@ -297,13 +297,12 @@ GEM
     rdoc (6.14.2)
       erb
       psych (>= 4.0.0)
-    react_on_rails (16.0.1.rc.0)
+    react_on_rails (14.2.1)
       addressable
       connection_pool
       execjs (~> 2.5)
       rails (>= 5.2)
       rainbow (~> 3.0)
-      shakapacker (>= 6.0)
     redcarpet (3.6.0)
     redis (5.3.0)
       redis-client (>= 0.22.0)
@@ -384,7 +383,7 @@ GEM
       rexml (~> 3.2, >= 3.2.5)
       rubyzip (>= 1.2.2, < 3.0)
       websocket (~> 1.0)
-    semantic_range (3.0.0)
+    semantic_range (3.1.0)
     sexp_processor (4.17.1)
     shakapacker (8.0.0)
       activesupport (>= 5.2)
@@ -482,7 +481,7 @@ DEPENDENCIES
   rails-html-sanitizer
   rails_best_practices
   rainbow
-  react_on_rails (= 16.0.1.rc.0)
+  react_on_rails (= 14.2.1)
   redcarpet
   redis (~> 5.0)
   rspec-rails (~> 6.0.0)

package.json

@@ -78,7 +78,7 @@
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
     "react-intl": "^6.4.4",
-    "react-on-rails": "16.0.1-rc.0",
+    "react-on-rails": "14.2.1",
     "react-redux": "^8.1.0",
     "react-router": "^6.13.0",
     "react-router-dom": "^6.13.0",

yarn.lock

@@ -7268,10 +7268,10 @@ react-is@^18.0.0:
   resolved "https://registry.yarnpkg.com/react-is/-/react-is-18.2.0.tgz#199431eeaaa2e09f86427efbb4f1473edb47609b"
   integrity sha512-xWGDIW6x921xtzPkhiULtthJHoJvBbF3q26fzloPCK0hsvxtPVelvftw3zjbHWSkR2km9Z+4uxbDDK/6Zw9B8w==
 
-react-on-rails@16.0.1-rc.0:
-  version "16.0.1-rc.0"
-  resolved "https://registry.npmjs.org/react-on-rails/-/react-on-rails-16.0.1-rc.0.tgz#dc99c843430585b3017113a464035179488bb154"
-  integrity sha512-xCrrp1X/vfT+QZjRwN9TDzWfxsf8Iz11QMqXumMs1TrT+KgJ33LLgUXYvYxAdnYgv41MbRvDCXG4Q/2ieakxoA==
+react-on-rails@14.2.1:
+  version "14.2.1"
+  resolved "https://registry.npmjs.org/react-on-rails/-/react-on-rails-14.2.1.tgz#e3072f21bb76a45de789fc78046d2bf0d9496878"
+  integrity sha512-1a7RCDzhM2/oAZChnJMcYDV023Gl6nwa5SAS+NW13jIpkigihiRw2ecYAFSjQq2BfCnASDw2z1ElmfTXhrYagw==
 
 react-proxy@^1.1.7:
   version "1.1.8"