refactor(gui-v2): implement overlay in attachment components

packages/nc-gui-v2/components/cell/attachment/Modal.vue

@@ -68,14 +68,16 @@ onKeyDown('Escape', () => {
     </template>
 
     <div ref="dropZoneRef">
-      <div
-        v-if="!isReadonly && !dragging"
-        :class="[isOverDropZone ? 'opacity-100' : 'opacity-0 pointer-events-none']"
-        class="transition-all duration-150 ease-in-out ring ring-pink-500 rounded bg-gray-700/75 flex items-center justify-center gap-4 z-99 absolute top-0 bottom-0 left-0 right-0 backdrop-blur-xl"
-      >
-        <MaterialSymbolsFileCopyOutline class="text-pink-500" height="35" width="35" />
-        <div class="text-white text-3xl">Drop here</div>
-      </div>
+      <template v-if="!isReadonly && !dragging">
+        <general-overlay
+          v-model="isOverDropZone"
+          inline
+          class="text-white ring ring-pink-500 bg-gray-700/75 flex items-center justify-center gap-2 backdrop-blur-xl"
+        >
+          <MaterialSymbolsFileCopyOutline class="text-pink-500" height="35" width="35" />
+          <div class="text-white text-3xl">Drop here</div>
+        </general-overlay>
+      </template>
 
       <div ref="sortableRef" :class="{ dragging }" class="grid grid-cols-2 md:grid-cols-3 xl:grid-cols-4 gap-6 relative p-6">
         <div v-for="(item, i) of visibleItems" :key="`${item.title}-${i}`" class="flex flex-col gap-1">

packages/nc-gui-v2/components/cell/attachment/index.vue

@@ -70,14 +70,14 @@ onMounted(() => {
     <Carousel />
 
     <template v-if="!isReadonly && !dragging && dropZoneRef">
-      <teleport :to="`td[data-col='${column.id}']`">
-        <div
-          :class="[isOverDropZone ? 'opacity-100' : 'opacity-0 pointer-events-none']"
-          class="text-white text-lg transition-all duration-150 ease-in-out ring ring-pink-500 bg-gray-700/75 flex items-center justify-center gap-2 z-99 absolute top-0 bottom-0 left-0 right-0 backdrop-blur-xl"
-        >
-          <MaterialSymbolsFileCopyOutline class="text-pink-500" /> Drop here
-        </div>
-      </teleport>
+      <general-overlay
+        v-model="isOverDropZone"
+        inline
+        :target="`td[data-col='${column.id}']`"
+        class="text-white text-lg ring ring-pink-500 bg-gray-700/75 flex items-center justify-center gap-2 backdrop-blur-xl"
+      >
+        <MaterialSymbolsFileCopyOutline class="text-pink-500" /> Drop here
+      </general-overlay>
     </template>
 
     <div