fix: application 返回 icon base64 字符串添加 ’data:image/png;base64,‘ 前缀

src/main/java/net/geedge/asw/module/app/service/impl/GitServiceImpl.java

@@ -257,7 +257,9 @@ public class GitServiceImpl implements IGitService {
                     String applicationName = T.MapUtil.getStr(map, "name");
                     if (T.StrUtil.isNotEmpty(applicationName)) {
                         String iconBase64Str = appIconDataMapping.get(T.StrUtil.concat(true, "applications/", applicationName, "/"));
-                        map.put("icon", iconBase64Str);
+                        if (T.StrUtil.isNotEmpty(iconBase64Str)) {
+                            map.put("icon", "data:image/png;base64," + iconBase64Str);
+                        }
                     }
                 }
             }