Update Dropdown Default Example

src/app/app.html

@@ -13,11 +13,11 @@
     <h2>Dropdown Component</h2>
     <div style="display: flex; flex-direction: column; gap: 40px; align-items: flex-start;">
       <div>
-        <h3>Object Options (with defaultIndex="1")</h3>
+        <h3>Object Options</h3>
         <dropdown
           [options]="dropdownOptions"
           [(value)]="selectedDropdownValue"
-          [defaultIndex]="1"
+          [defaultIndex]="0"
           (selectionChange)="handleDropdownChange($event)"
           icon="language">
         </dropdown>