Update System default handler title on Bug report handler settings

- Replace "Android System (Shell)" with "Android System"
- https://screenshot.googleplex.com/U3pxUHx3Uv0
- https://screenshot.googleplex.com/qKqqZUJM2w6

Bug: 143017534
Test: Flash device and check the title
Change-Id: I3036520d5887f70d1c43896eda56587d2ff9cdab

res/values/strings.xml

@@ -11405,9 +11405,6 @@
     <!-- Subtext of system default app for current setting [CHAR LIMIT=NONE] -->
     <string name="system_default_app_subtext">System default</string>
 
-    <!-- Title of Shell app for current setting [CHAR LIMIT=NONE] -->
-    <string name="shell_app">Android System (Shell)</string>
-
     <!-- Developer settings: text for the bug report handler selection toast shown if an invalid bug report handler was chosen. [CHAR LIMIT=NONE] -->
     <string name="select_invalid_bug_report_handler_toast_text">This choice is no longer valid. Try again.</string>
 

src/com/android/settings/bugreporthandler/BugReportHandlerPicker.java

@@ -197,7 +197,7 @@ public class BugReportHandlerPicker extends DefaultAppPickerFragment {
                 return null;
             }
             if (BugReportHandlerUtil.SHELL_APP_PACKAGE.equals(packageItemInfo.packageName)) {
-                return mContext.getString(R.string.shell_app);
+                return mContext.getString(com.android.internal.R.string.android_system_label);
             }
             return super.loadLabel();
         }

src/com/android/settings/development/BugReportHandlerPreferenceController.java

@@ -73,7 +73,7 @@ public class BugReportHandlerPreferenceController extends DeveloperOptionsPrefer
         final String handlerApp = mBugReportHandlerUtil.getCurrentBugReportHandlerAppAndUser(
                 mContext).first;
         if (BugReportHandlerUtil.SHELL_APP_PACKAGE.equals(handlerApp)) {
-            return mContext.getString(R.string.shell_app);
+            return mContext.getString(com.android.internal.R.string.android_system_label);
         }
         ApplicationInfo applicationInfo;
         try {