allow comments for all field formats

https://community.openproject.org/projects/stadt-koeln/work_packages/64264/activity#comment-1607511

app/models/custom_field.rb

@@ -351,7 +351,7 @@ class CustomField < ApplicationRecord
   end
 
   def can_have_comment?
-    is_a?(ProjectCustomField) && field_format.in?(%w[bool date float int list user version])
+    is_a?(ProjectCustomField)
   end
 
   ##

lib/open_project/custom_field_format_dependent.rb

@@ -35,7 +35,6 @@ module OpenProject
       defaultText: [:except, %w[list bool date text user version hierarchy calculated_value]],
       enterpriseBanner: [:only, %w[hierarchy]],
       formula: [:only, %w[calculated_value]],
-      hasComment: [:only, %w[bool date float int list user version]],
       length: [:except, %w[list bool date user version link hierarchy calculated_value]],
       multiSelect: [:only, %w[list user version hierarchy]],
       possibleValues: [:only, %w[list]],