fix(rich-md-editor): hide the code line-wrap toggle in read-only

Author: waleedlatif1

apps/sim/app/workspace/[workspaceId]/files/components/file-viewer/rich-markdown-editor/code-block.tsx

@@ -179,7 +179,7 @@ function CodeBlockView({ node, updateAttributes, editor, getPos }: ReactNodeView
               {label}
             </span>
           ))}
-        {!isMermaid && (
+        {!isMermaid && editor.isEditable && (
           <button
             type='button'
             aria-label='Toggle line wrap'