feat: migrate from Radix Vue to Reka UI (#6870)

* Initial plan

* Update dependencies and imports from radix-vue to reka-ui

Co-authored-by: likui628 <90845831+likui628@users.noreply.github.com>

* Fix type errors after reka-ui migration

Co-authored-by: likui628 <90845831+likui628@users.noreply.github.com>

* Run formatter to fix code style

Co-authored-by: likui628 <90845831+likui628@users.noreply.github.com>

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: likui628 <90845831+likui628@users.noreply.github.com>

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

@@ -209,7 +209,7 @@ onBeforeUnmount(() => {
           is(rootMenu.theme, true),
           opened ? '' : 'hidden',
           'overflow-auto',
-          'max-h-[calc(var(--radix-hover-card-content-available-height)-20px)]',
+          'max-h-[calc(var(--reka-hover-card-content-available-height)-20px)]',
         ]"
         :content-props="contentProps"
         :open="true"