Fix CW being moved to text when posting quote posts with empty text (#36151)

spec/requests/api/v1/statuses_spec.rb

@@ -226,6 +226,29 @@ RSpec.describe '/api/v1/statuses' do
         end
       end
 
+      context 'with a self-quote post and a CW but no text', feature: :outgoing_quotes do
+        let(:quoted_status) { Fabricate(:status, account: user.account) }
+        let(:params) do
+          {
+            spoiler_text: 'this is a CW',
+            quoted_status_id: quoted_status.id,
+          }
+        end
+
+        it 'returns a quote post, as well as rate limit headers', :aggregate_failures do
+          subject
+
+          expect(response).to have_http_status(200)
+          expect(response.content_type)
+            .to start_with('application/json')
+          expect(response.parsed_body[:quote]).to be_present
+          expect(response.parsed_body[:spoiler_text]).to eq 'this is a CW'
+          expect(response.parsed_body[:content]).to eq ''
+          expect(response.headers['X-RateLimit-Limit']).to eq RateLimiter::FAMILIES[:statuses][:limit].to_s
+          expect(response.headers['X-RateLimit-Remaining']).to eq (RateLimiter::FAMILIES[:statuses][:limit] - 1).to_s
+        end
+      end
+
       context 'with a safeguard' do
         let!(:alice) { Fabricate(:account, username: 'alice') }
         let!(:bob)   { Fabricate(:account, username: 'bob') }