FIX: Do not attempt to pull_hotlinked_image for raw_html

raw_html posts (i.e. those which are pulled as part of our comments integration) don't go through our markdown pipeline, so `upload://` URLs are not supported. Running pull_hotlinked_images will break any images in the post.

In future we may add support for pulling hotlinked images in these posts. But for now, disabling it will stop it breaking images.

app/jobs/regular/pull_hotlinked_images.rb

@@ -16,6 +16,7 @@ module Jobs
       post = Post.find_by(id: @post_id)
       return if post.blank?
       return if post.topic.blank?
+      return if post.cook_method == Post.cook_methods[:raw_html]
 
       raw = post.raw.dup
       start_raw = raw.dup

spec/jobs/pull_hotlinked_images_spec.rb

@@ -197,6 +197,18 @@ describe Jobs::PullHotlinkedImages do
       expect(post.uploads).to contain_exactly(upload)
     end
 
+    it "skips raw_html posts" do
+      raw = "<img src=\"#{image_url}\">"
+      post = Fabricate(:post, raw: raw, cook_method: Post.cook_methods[:raw_html])
+      stub_image_size
+      expect do
+        post.rebake!
+        post.reload
+      end.not_to change { Upload.count }
+
+      expect(post.raw).to eq(raw)
+    end
+
     context "when secure media enabled for an upload that has already been downloaded and exists" do
       it "doesnt redownload the secure upload" do
         setup_s3