[Classroom][FE] Fix bug, copy button not copying

frontend/src/OnlineClassroom/ClassroomUserCourses/Message.tsx

@@ -45,7 +45,13 @@ Saludos Cordiales!
 
             <div>
                 <h3 class="px-4 pt-2 font-bold">
-                    <button class="mr-2 hover:bg-c-surface-variant rounded" title="Copiar">
+                    <button
+                        class="mr-2 hover:bg-c-surface-variant rounded"
+                        title="Copiar"
+                        onclick={() => {
+                            navigator.clipboard.writeText(personMessage());
+                        }}
+                    >
                         <CopyIcon fill="var(--c-primary)" />
                     </button>
                     Mensaje usuario natural: