Update widgets bottom sheet to match redlines

- Remove "Configurable shortcuts" row, and put all widgets in one row
- Update some sizes and colors and text
- Center widget row if only one widget

Bug: 35766387
Change-Id: Ic3850feadee1cbbbdd68a772f597741d54949703
diff --git a/res/values/strings.xml b/res/values/strings.xml
index eddae62..4bee87d 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -205,8 +205,8 @@
     <string name="app_waiting_download_title"><xliff:g id="name" example="Messenger">%1$s</xliff:g> waiting to install</string>
 
     <!-- Strings for widgets & more in the popup container/bottom sheet -->
-    <string name="widgets_and_more" translatable="false">Widgets &amp; more</string>
-    <string name="widgets_bottom_sheet_custom_shortcuts_section_title" translatable="false">Custom shortcuts</string>
+    <!-- Title for a bottom sheet that shows widgets for a particular app -->
+    <string name="widgets_bottom_sheet_title"><xliff:g id="name" example="Messenger">%1$s</xliff:g> widgets</string>
 
 <!-- Strings for accessibility actions -->
     <!-- Accessibility action to add an app to workspace. [CHAR_LIMIT=30] -->