fix: remove clipboard inline svg from a file with SASS (#6148)

* directly load data:image/svg+xml
* current webpack config only allows inline file via jsx

Author: tim-lai

src/img/clipboard.svg

@@ -171,6 +171,6 @@ button
     padding-left: 25px;
     border: none;
     height: 25px;
-    background: url("../img/clipboard.svg") center center no-repeat;
+    background: url("data:image/svg+xml, <svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' aria-hidden='true'><path fill='#ffffff' fill-rule='evenodd' d='M2 13h4v1H2v-1zm5-6H2v1h5V7zm2 3V8l-3 3 3 3v-2h5v-2H9zM4.5 9H2v1h2.5V9zM2 12h2.5v-1H2v1zm9 1h1v2c-.02.28-.11.52-.3.7-.19.18-.42.28-.7.3H1c-.55 0-1-.45-1-1V4c0-.55.45-1 1-1h3c0-1.11.89-2 2-2 1.11 0 2 .89 2 2h3c.55 0 1 .45 1 1v5h-1V6H1v9h10v-2zM2 5h8c0-.55-.45-1-1-1H8c-.55 0-1-.45-1-1s-.45-1-1-1-1 .45-1 1-.45 1-1 1H3c-.55 0-1 .45-1 1z'></path></svg>") center center no-repeat;
   }
 }