refactor: fix popup component zIndex (#5397)

packages/@core/ui-kit/shadcn-ui/src/components/back-top/back-top.vue

@@ -32,7 +32,7 @@ const { handleClick, visible } = useBackTop(props);
     <VbenButton
       v-if="visible"
       :style="backTopStyle"
-      class="dark:bg-accent dark:hover:bg-heavy bg-background hover:bg-heavy data shadow-float fixed bottom-10 z-[1000] size-10 rounded-full duration-500"
+      class="dark:bg-accent dark:hover:bg-heavy bg-background hover:bg-heavy data shadow-float z-popup fixed bottom-10 size-10 rounded-full duration-500"
       size="icon"
       variant="icon"
       @click="handleClick"

packages/@core/ui-kit/shadcn-ui/src/components/context-menu/context-menu.vue

@@ -69,7 +69,7 @@ function handleClick(menu: IContextMenuItem) {
     <ContextMenuContent
       :class="contentClass"
       v-bind="contentProps"
-      class="side-content z-[1000]"
+      class="side-content z-popup"
     >
       <template v-for="menu in menusView" :key="menu.key">
         <ContextMenuItem

packages/@core/ui-kit/shadcn-ui/src/components/hover-card/hover-card.vue

@@ -47,7 +47,7 @@ const forwarded = useForwardPropsEmits(delegatedProps, emits);
     <HoverCardContent
       :class="contentClass"
       v-bind="contentProps"
-      class="side-content z-[1000]"
+      class="side-content z-popup"
     >
       <slot></slot>
     </HoverCardContent>

packages/@core/ui-kit/shadcn-ui/src/components/popover/popover.vue

@@ -48,7 +48,7 @@ const forwarded = useForwardPropsEmits(delegatedProps, emits);
 
       <PopoverContent
         :class="contentClass"
-        class="side-content z-[1000]"
+        class="side-content z-popup"
         v-bind="contentProps"
       >
         <slot></slot>