[Expressive Battery] Migrate tips card in battery usage to banner message

- Update card preference: Update icon hint color by banner attention level
- Remove redundant color token: Use the existing Material yellow as a warning color

Bug: 349652542
Test: atest BatteryTipsControllerTest
Flag: com.android.settingslib.widget.theme.flags.is_expressive_design_enabled
Change-Id: I35730eb4716e9dbd712c22db63490e8bc06fc482

res/values/arrays.xml

@@ -1459,11 +1459,6 @@
         <item>ic_battery_tips_warning_icon</item>
     </string-array>
 
-    <string-array name="battery_tips_card_colors" translatable="false">
-        <item>color_accent_selector</item>
-        <item>color_battery_anomaly_app_warning_selector</item>
-    </string-array>
-
     <!-- The following 4 arrays are for power anomaly tips card. Please keep them the same size. -->
     <string-array name="power_anomaly_title_ids" translatable="false">
         <item>battery_tips_settings_summary_brightness</item>

res/values/colors.xml

@@ -168,9 +168,6 @@
     <!-- Icon tint color for battery usage system icon -->
     <color name="battery_usage_system_icon_color">?android:attr/textColorPrimary</color>
 
-    <!-- Power anomaly color for icons, button -->
-    <color name="power_anomaly_app_warning_hint_color">#D56E0C</color>
-
     <!-- UDFPS colors -->
     <color name="udfps_enroll_icon">#699FF3</color>
     <color name="udfps_moving_target_fill">#C2D7F7</color>