WEBDEV-8812: Migrate ia-dropdown into elements

package.json

@@ -28,7 +28,6 @@
   },
   "dependencies": {
     "@internetarchive/ia-clearable-text-input": "^1.1.1",
-    "@internetarchive/ia-dropdown": "^2.2.0",
     "@lit/localize": "^0.12.2",
     "lit": "^2.8.0 || ^3.3.2",
     "magic-snowflakes": "^7.0.2",

src/elements/ia-dropdown-search-bar/ia-dropdown-search-bar.ts

@@ -9,14 +9,17 @@ import {
 } from 'lit';
 import { customElement, property, query } from 'lit/decorators.js';
 import type { IaClearableTextInput } from '@internetarchive/ia-clearable-text-input';
-import type { IaDropdown, optionInterface } from '@internetarchive/ia-dropdown';
+import type {
+  IADropdown,
+  OptionInterface,
+} from '@src/elements/ia-dropdown/ia-dropdown';
 import type { SearchCategory, SearchRequestedDetail } from './models';
 
 import themeStyles from '@src/themes/theme-styles';
 import searchIcon from './search.svg';
 
 import '@internetarchive/ia-clearable-text-input';
-import '@internetarchive/ia-dropdown';
+import '@src/elements/ia-dropdown/ia-dropdown';
 import '@src/elements/ia-status-indicator/ia-status-indicator';
 
 /**
@@ -54,7 +57,7 @@ export class IADropdownSearchBar extends LitElement {
   private searchInput!: IaClearableTextInput;
 
   @query('#category-dropdown')
-  private categoryDropdown?: IaDropdown;
+  private categoryDropdown?: IADropdown;
 
   /** The effective selected category, falling back to the first in the list. */
   private get resolvedCategory(): string {
@@ -197,7 +200,7 @@ export class IADropdownSearchBar extends LitElement {
    * pattern). The parent also binds this property and may re-set it on re-render.
    */
   private handleCategorySelected(
-    e: CustomEvent<{ option: optionInterface }>,
+    e: CustomEvent<{ option: OptionInterface }>,
   ): void {
     const newCategoryId = e.detail.option.id;
     if (newCategoryId === this.resolvedCategory) return;