fix: Update the background image path of the copy button and icon component, delete unused blank image files

web/app/components/base/copy-btn/style.module.css

@@ -1,15 +1,15 @@
 .copyIcon {
-  background-image: url(app/components/develop/secret-key/assets/copy.svg);
+  background-image: url(/assets/copy.svg);
   background-position: center;
   background-repeat: no-repeat;
 }
 
 .copyIcon:hover {
-  background-image: url(app/components/develop/secret-key/assets/copy-hover.svg);
+  background-image: url(/assets/copy-hover.svg);
   background-position: center;
   background-repeat: no-repeat;
 }
 
 .copyIcon.copied {
-  background-image: url(app/components/develop/secret-key/assets/copied.svg);
+  background-image: url(/assets/copied.svg);
 }

web/app/components/base/icons/src/image/llm/BaichuanTextCn.module.css

@@ -1,5 +1,5 @@
 .wrapper {
   display: inline-flex;
-  background: url(app/components/base/icons/assets/image/llm/baichuan-text-cn.png) center center no-repeat;
+  background: url(/app/components/base/icons/assets/image/llm/baichuan-text-cn.png) center center no-repeat;
   background-size: contain;
 }