fix v1.33.3: icon picker shows the auto icon when none set

- marker dialog stores autoIcon (DevItem.icon); ha-icon-picker gets it
  as placeholder, fallback input too; 'Auto: mdi:...' hint with preview
  under the picker, hidden once an explicit icon is chosen
- smoke_icon_placeholder.mjs; TESTING/CHANGELOG same-commit

package.json

@@ -1,6 +1,6 @@
 {
   "name": "houseplan-card",
-  "version": "1.33.2",
+  "version": "1.33.3",
   "description": "Interactive house plan Lovelace card for Home Assistant",
   "license": "MIT",
   "type": "module",