[Provider Model] Adjust the width of the progress bar

- When the display size is enlarged, the progress bar will also be
enlarged. Adjust the width of the progress bar to 152dp.

- See b/211537946#comment11 for a screenshot.

Bug: 211537946
Test: manual test
atest -c InternetAdapterTest \
         InternetDialogControllerTest \
         InternetDialogTest

Change-Id: Ief4fabf4c8d485611927d1cfb2c9a4b1b10f2fa4

packages/SystemUI/res/layout/internet_connectivity_dialog.xml

@@ -53,21 +53,22 @@
     </LinearLayout>
 
     <LinearLayout
-        android:layout_width="match_parent"
+        android:layout_width="@dimen/internet_dialog_progress_bar_width"
         android:layout_height="wrap_content"
+        android:layout_gravity="center_horizontal"
         android:layout_marginBottom="@dimen/internet_dialog_network_layout_margin"
         android:orientation="vertical">
 
         <View
             android:id="@+id/divider"
-            android:layout_gravity="center_vertical|center_horizontal"
-            android:layout_width="340dp"
+            android:layout_width="match_parent"
             android:layout_height="4dp"
+            android:layout_gravity="center_vertical|center_horizontal"
             android:background="?androidprv:attr/colorSurfaceVariant"/>
 
         <ProgressBar
             android:id="@+id/wifi_searching_progress"
-            android:layout_width="340dp"
+            android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_gravity="center_horizontal"
             android:visibility="gone"

packages/SystemUI/res/values/dimens.xml

@@ -1254,6 +1254,8 @@
 
     <!-- Internet dialog related dimensions -->
     <dimen name="internet_dialog_corner_radius">24dp</dimen>
+    <!-- Width of progress bar -->
+    <dimen name="internet_dialog_progress_bar_width">152dp</dimen>
     <!-- End margin of network layout -->
     <dimen name="internet_dialog_network_layout_margin">16dp</dimen>
     <!-- Size of switch bar in internet dialog -->