Add missing preventDefault

src/lib/Sidebar.svelte

@@ -44,7 +44,7 @@
       <a class="panel-block"
         href="{'#/'}"
         class:is-disabled={!$apiKeyStorage}
-        on:click={() => {
+        on:click|preventDefault={() => {
           const confirmDelete = window.confirm('Are you sure you want to delete all your chats?')
           if (confirmDelete) {
             replace('#/').then(() => clearChats())