Fix Spinner Ripple Effect in WCMaterialOutlinedSpinnerView

Disabled Hint: Set hintEnabled="false" in the WCMaterialOutlinedSpinnerView style to prevent the floating hint from occupying space and causing unintended ripple effects in the layout.

WooCommerce/src/main/res/values/styles_base.xml

@@ -388,6 +388,7 @@ theme across the entire app. Overridden versions should be added to the styles.x
         <item name="android:background">?attr/selectableItemBackground</item>
         <item name="android:focusable">true</item>
         <item name="android:focusableInTouchMode">true</item>
+        <item name="hintEnabled">false</item>
     </style>
 
     <!--  Style set at the theme level, no need to set in layout files  -->