Prevent crash during ActiveRecord const check

Author: andyw8

lib/ruby_lsp/ruby_lsp_rails/server.rb

@@ -82,7 +82,7 @@ def execute(request, params)
       sig { params(model_name: String).returns(T::Hash[Symbol, T.untyped]) }
       def resolve_database_info_from_model(model_name)
         const = ActiveSupport::Inflector.safe_constantize(model_name)
-        unless const && defined?(ActiveRecord) && const < ActiveRecord::Base && !const.abstract_class?
+        unless active_record_model?(const)
           return {
             result: nil,
           }
@@ -104,6 +104,17 @@ def resolve_database_info_from_model(model_name)
       rescue => e
         { error: e.full_message(highlight: false) }
       end
+
+      sig { params(const: T.untyped).returns(T::Boolean) }
+      def active_record_model?(const)
+        !!(
+          const &&
+            defined?(ActiveRecord) &&
+            const.respond_to?(:<) &&
+            const < ActiveRecord::Base &&
+            !const.abstract_class?
+        )
+      end
     end
   end
 end