增加标注图片地址404判断

static/3rdparty/libgif.js

@@ -926,8 +926,14 @@
             get_current_frame: function() { return player.current_frame() },
             load_url: function(src,callback){
                 if (!load_setup(callback)) return;
-
                 var h = new XMLHttpRequest();
+                h.onreadystatechange = function() {
+                    if (h.readyState == 4) {
+                        if (h.status == 404) {
+                            callback(404)
+                        }
+                    }
+                };
                 // new browsers (XMLHttpRequest2-compliant)
                 h.open('GET', src, true);
 

static/custom/css/index.css

@@ -1599,6 +1599,10 @@
   width: 23px;
   height: 26px;
   cursor: pointer;
+  border: 1px solid rgba(var(--color-sdk-base-rgb), 0.2);
+  display: flex;
+  align-items: center;
+  justify-content: center;
 }
 
 .YJ-custom-base-dialog.billboard-object>.content div .image {