Add dark mode strings

This adds some dark mode strings and also tweaks the title string
for the preference.

Test: phone boots
Bug: 124252163
Change-Id: I32b8eda6d28ba03dd895a36db536ce5334713f9a
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 069da2a..ed06ecd 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -9820,7 +9820,13 @@
     <string name="dark_ui_mode">Theme</string>
 
     <!-- [CHAR LIMIT=60] Name of dev option that changes the color of the UI -->
-    <string name="dark_ui_mode_title">Set Theme</string>
+    <string name="dark_ui_mode_title">Choose Theme</string>
+
+    <!-- [CHAR_LIMIT=NONE] Summary that is shown in the footer when light mode is selected -->
+    <string name="dark_ui_settings_light_summary">This setting also applies to apps</string>
+
+    <!-- [CHAR_LIMIT=NONE] Summary that is shown in the footer when dark mode is selected -->
+    <string name="dark_ui_settings_dark_summary">Supported apps will also switch to dark theme</string>
 
     <!-- [CHAR LIMIT=60] Name of dev option to enable extra quick settings tiles -->
     <string name="quick_settings_developer_tiles">Quick settings developer tiles</string>