Extend Battery Defender strings chars limit

Bug: 174860445
Test: m -j40, make full ROM
Change-Id: Icd7dda8c0c2cc6dcc48f7c8bf1ff1b4e5d690adf

Author: Wesley.CW Wang

packages/SettingsLib/res/values/strings.xml

@@ -1100,7 +1100,7 @@
     <string name="power_remaining_charging_duration_only"><xliff:g id="time">%1$s</xliff:g> left until charged</string>
     <!-- [CHAR_LIMIT=40] Label for battery level chart when charging with duration -->
     <string name="power_charging_duration"><xliff:g id="level">%1$s</xliff:g> - <xliff:g id="time">%2$s</xliff:g> until charged</string>
-    <!-- [CHAR_LIMIT=40] Label for battery level chart when charge been limited -->
+    <!-- [CHAR_LIMIT=80] Label for battery level chart when charge been limited -->
     <string name="power_charging_limited"><xliff:g id="level">%1$s</xliff:g> - Optimizing for battery health</string>
 
     <!-- Battery Info screen. Value for a status item.  Used for diagnostic info screens, precise translation isn't needed -->