FIX: Rate limiting when moving posts with freeze option (#30041)

before this commit, when moving posts with freeze option, the rate limit was being applied leading to errors. This commit fixes that.

and also adds tests for the scenarios of moving posts with freeze option.

app/models/post_mover.rb

@@ -299,6 +299,7 @@ class PostMover
       end
 
     moved_post.attributes = update
+    moved_post.disable_rate_limits! if @options[:freeze_original]
     moved_post.save(validate: false)
 
     DiscourseEvent.trigger(:post_moved, moved_post, original_topic.id)

spec/models/post_mover_spec.rb

@@ -2789,6 +2789,75 @@ RSpec.describe PostMover do
         expect(pm_with_posts.posts.map(&:raw)).to include(*moving_posts.map(&:raw))
         expect(pm.posts.map(&:raw)).to include(*moving_posts.map(&:raw))
       end
+
+      context "with rate limit" do
+        before do
+          RateLimiter.enable
+          Fabricate.times(20, :post, topic: original_topic)
+        end
+
+        it "does not rate limit when moving to a new topic" do
+          begin
+            PostMover.new(
+              original_topic,
+              Discourse.system_user,
+              original_topic.posts.map(&:id),
+              options: {
+                freeze_original: true,
+              },
+            ).to_new_topic("Hi I'm a new topic, with a copy of the old posts")
+          rescue RateLimiter::LimitExceeded
+            fail "Rate limit exceeded"
+          end
+        end
+
+        it "does not rate limit when moving to an existing topic" do
+          begin
+            PostMover.new(
+              original_topic,
+              Discourse.system_user,
+              original_topic.posts.map(&:id),
+              options: {
+                freeze_original: true,
+              },
+            ).to_topic(destination_topic.id)
+          rescue RateLimiter::LimitExceeded
+            fail "Rate limit exceeded"
+          end
+        end
+
+        it "does not rate limit when moving to a new PM" do
+          begin
+            PostMover.new(
+              original_topic,
+              Discourse.system_user,
+              original_topic.posts.map(&:id),
+              move_to_pm: true,
+              options: {
+                freeze_original: true,
+              },
+            ).to_new_topic("Hi I'm a new PM, with a copy of the old posts")
+          rescue RateLimiter::LimitExceeded
+            fail "Rate limit exceeded"
+          end
+        end
+
+        it "does not rate limit when moving to an existing PM" do
+          begin
+            PostMover.new(
+              original_topic,
+              Discourse.system_user,
+              original_topic.posts.map(&:id),
+              move_to_pm: true,
+              options: {
+                freeze_original: true,
+              },
+            ).to_topic(destination_topic.id)
+          rescue RateLimiter::LimitExceeded
+            fail "Rate limit exceeded"
+          end
+        end
+      end
     end
   end
 end