Change "More details" to "Learn more" in policy transparency dialog.

Screenshot: https://screenshot.googleplex.com/5xrwW3g29qa.png

Bug: 77618738
Test: none
Change-Id: I464f492cd6b1468b85b5a691c29ae7a982ecebff

src/com/android/settings/enterprise/ActionDisabledByAdminDialogHelper.java

@@ -72,7 +72,7 @@ public class ActionDisabledByAdminDialogHelper {
                 mRestriction);
         return builder
             .setPositiveButton(R.string.okay, null)
-            .setNeutralButton(R.string.admin_more_details,
+            .setNeutralButton(R.string.learn_more,
                     (dialog, which) -> {
                         showAdminPolicies(mEnforcedAdmin, mActivity);
                         mActivity.finish();