fix: Re-add coffee-script gem

Until we have a removal with no issues, we keep this dependency explicit, with a clear sign-post about when we can remove it.

Author: olleolleolle

Gemfile

@@ -4,6 +4,7 @@ ruby file: '.ruby-version'
 gem 'rails', '~> 8.1.2' # LOCKED: It is Rails.
 # The original asset pipeline for Rails [https://github.com/rails/sprockets-rails]
 gem 'sprockets-rails'
+gem 'coffee-script' # LOCKED: Added because Sprockets autoloads it when seeing .coffee files in the asset pipeline. Can be removed when that does not happen.
 
 gem 'amazing_print' # colourful output (suggested by rails_semantic_logger)
 gem 'rails_semantic_logger' # condense log lines: https://github.com/codebar/planner/issues/2339

Gemfile.lock

@@ -154,6 +154,10 @@ GEM
       logger (~> 1.5)
     cocoon (1.2.15)
     coderay (1.1.3)
+    coffee-script (2.4.1)
+      coffee-script-source
+      execjs
+    coffee-script-source (1.12.2)
     commonmarker (2.6.3-aarch64-linux)
     commonmarker (2.6.3-arm64-darwin)
     commonmarker (2.6.3-x86_64-darwin)
@@ -616,6 +620,7 @@ DEPENDENCIES
   carrierwave
   carrierwave-aws (~> 1.6)
   cocoon
+  coffee-script
   commonmarker
   csv
   database_cleaner