[Expressive design] Add expandable preference

Bug: 367539940
Test: manual
Flag: EXEMPT resource only update

Change-Id: I94c9f277294477c05c0f430a0302b1f4690bf7b0
diff --git a/packages/SettingsLib/Android.bp b/packages/SettingsLib/Android.bp
index af07686..a36ec00 100644
--- a/packages/SettingsLib/Android.bp
+++ b/packages/SettingsLib/Android.bp
@@ -39,6 +39,7 @@
         "SettingsLibDisplayUtils",
         "SettingsLibEmergencyNumber",
         "SettingsLibEntityHeaderWidgets",
+        "SettingsLibExpandablePreference",
         "SettingsLibFooterPreference",
         "SettingsLibHelpUtils",
         "SettingsLibIllustrationPreference",