[User Switcher] Ensure that Textview suports RTL.

Add text direction for the textview to support RTL.

Test: Manual on device
Bug: 234857659
Change-Id: Icebcad2ca93a6f70711db7b5ddcd7a4506d895c4

packages/SystemUI/res-keyguard/layout/keyguard_bouncer_user_switcher.xml

diff --git a/packages/SystemUI/res-keyguard/layout/keyguard_bouncer_user_switcher.xml b/packages/SystemUI/res-keyguard/layout/keyguard_bouncer_user_switcher.xml
index 36035fc..01e3de2 100644
--- a/packages/SystemUI/res-keyguard/layout/keyguard_bouncer_user_switcher.xml
+++ b/packages/SystemUI/res-keyguard/layout/keyguard_bouncer_user_switcher.xml
@@ -45,6 +45,7 @@
           style="@style/Bouncer.UserSwitcher.Spinner.Header"
           android:clickable="false"
           android:id="@+id/user_switcher_header"
+          android:textDirection="locale"
           android:layout_width="@dimen/bouncer_user_switcher_width"
           android:layout_height="wrap_content" />
     </LinearLayout>>