更新 Vuetify 默认设置，修改菜单图标，调整样式变量，优化用户资料组件样式

src/@layouts/components/VerticalNav.vue

@@ -59,9 +59,6 @@ function handleNavScroll(evt: Event) {
         </RouterLink>
       </slot>
     </div>
-    <slot name="before-nav-items">
-      <div class="vertical-nav-items-shadow" />
-    </slot>
     <slot name="nav-items" :update-is-vertical-nav-scrolled="updateIsVerticalNavScrolled">
       <PerfectScrollbar
         tag="ul"
@@ -98,11 +95,6 @@ function handleNavScroll(evt: Event) {
   transition: transform 0.25s ease-in-out, inline-size 0.25s ease-in-out, box-shadow 0.25s ease-in-out;
   visibility: hidden;
   will-change: transform, inline-size;
-  background-color: rgb(var(--v-theme-surface));
-  box-shadow: 0 2px 8px rgba(var(--v-theme-on-surface), 0.08);
-  border-radius: 0 8px 8px 0;
-  margin: 8px 0 8px 8px;
-  max-height: calc(100% - 16px);
 
   &:not(.overlay-nav) {
     visibility: visible;