style: improve loading overlay in dark display

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

@@ -69,7 +69,7 @@ function onTransitionEnd() {
   <div
     :class="
       cn(
-        'z-100 pointer-events-none absolute left-0 top-0 flex size-full flex-col items-center justify-center bg-[hsl(var(--overlay-light))] transition-all duration-500',
+        'z-100 dark:bg-overlay pointer-events-none absolute left-0 top-0 flex size-full flex-col items-center justify-center bg-[hsl(var(--overlay-light))] transition-all duration-500',
         {
           'invisible opacity-0': !showSpinner,
         },

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

@@ -63,7 +63,7 @@ function onTransitionEnd() {
   <div
     :class="
       cn(
-        'flex-center z-100 absolute left-0 top-0 size-full bg-[hsl(var(--overlay-light))] backdrop-blur-sm transition-all duration-500',
+        'flex-center z-100 dark:bg-overlay absolute left-0 top-0 size-full bg-[hsl(var(--overlay-light))] backdrop-blur-sm transition-all duration-500',
         {
           'invisible opacity-0': !showSpinner,
         },