Stabilize IDs for outfit viewer component

This seems to fix some morphing issues, whew!

app/views/application/_outfit_viewer.html.haml

@@ -1,4 +1,5 @@
 - html_options = {} unless defined? html_options
+- viewer_id = html_options[:id] ||= "outfit-viewer-#{SecureRandom.hex(8)}"
 = content_tag "outfit-viewer", **html_options do
   .loading-indicator= render partial: "hanger_spinner"
 
@@ -14,6 +15,7 @@
 
   - outfit.visible_layers.each do |swf_asset|
     %outfit-layer{
+      id: "#{viewer_id}-layer-#{swf_asset.id}",
       data: {
         "asset-id": swf_asset.id,
         "zone": swf_asset.zone.label,

app/views/items/show.html.haml

@@ -16,7 +16,7 @@
 
 = turbo_frame_tag "item-preview" do
   .preview-area
-    = outfit_viewer @preview_outfit
+    = outfit_viewer @preview_outfit, id: "item-preview-outfit-viewer"
     .error-indicator
       💥 We couldn't load all of this outfit. Try again?
     = link_to wardrobe_path(params: @preview_outfit.wardrobe_params),