Fix issue with drawer positioning when nesting drawers with no target

packages/bbui/src/Drawer/Drawer.svelte

@@ -172,12 +172,7 @@
 
 {#if visible}
   <Portal target=".modal-container">
-    <div class="drawer-container">
-      <div
-        class="underlay"
-        class:hidden={!$modal}
-        transition:drawerFade|local
-      />
+    <div class="underlay" class:hidden={!$modal} transition:drawerFade|local />
     <div
       class="drawer"
       class:stacked={depth > 0}
@@ -209,7 +204,6 @@
       <slot name="body" />
       <div class="overlay" class:hidden={$modal || depth === 0} />
     </div>
-    </div>
   </Portal>
 {/if}