fix(ui): use inline style for multi-entity green background to override ant-btn

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/components/rules/new/ExtractionSettings.tsx

@@ -724,7 +724,8 @@ export function ExtractionSettings({
                     <button
                       type="button"
                       key={`llm-field-${index}`}
-                      className={`ant-btn ant-btn-default tag-button ${multiEntityEnabled && isMulti ? 'tag-multi-entity' : ''}`}
+                      className="ant-btn ant-btn-default tag-button"
+                      style={multiEntityEnabled && isMulti ? { backgroundColor: '#00684a', borderColor: '#00684a', color: '#fff' } : undefined}
                       onClick={() => multiEntityEnabled && toggleLLMFieldMultiEntity(index)}
                       title={multiEntityEnabled ? (isMulti ? '点击关闭多实体展开' : '点击开启多实体展开') : name}
                     >