refactor: consolidate handling of tags and responseFields for improved clarity

Author: manu4543

lib/imagekit/models/beta/v2/file_upload_params.rb

@@ -51,11 +51,8 @@ def self.serialize_upload_options(upload_options)
               end
 
               serialized[key] = case key
-                                when :tags
-                                  # Tags should be comma-separated string
-                                  value.is_a?(Array) ? value.join(",") : value
-                                when :responseFields
-                                  # Response fields should be comma-separated string
+                                when :tags, :responseFields
+                                  # Tags and response fields should be comma-separated strings
                                   value.is_a?(Array) ? value.join(",") : value
                                 when :extensions
                                   # Extensions should be JSON stringified

lib/imagekit/models/file_upload_params.rb

@@ -49,11 +49,8 @@ def self.serialize_upload_options(upload_options)
           end
 
           serialized[key] = case key
-                            when :tags
-                              # Tags should be comma-separated string
-                              value.is_a?(Array) ? value.join(",") : value
-                            when :responseFields
-                              # Response fields should be comma-separated string
+                            when :tags, :responseFields
+                              # Tags and response fields should be comma-separated strings
                               value.is_a?(Array) ? value.join(",") : value
                             when :extensions
                               # Extensions should be JSON stringified