[Catalog][DatePicker] Fix incorrect time stamps

Resolves #3132

GIT_ORIGIN_REV_ID=c918a0dc107d164bdc486788f5def004c5bdeb77
PiperOrigin-RevId: 493921722

(cherry picked from commit 86fc5fa)

Author: pubiqq

catalog/java/io/material/catalog/datepicker/DatePickerMainDemoFragment.java

@@ -68,7 +68,7 @@ private void initSettings() {
     today = MaterialDatePicker.todayInUtcMilliseconds();
     Calendar calendar = getClearedUtc();
     calendar.setTimeInMillis(today);
-    calendar.roll(Calendar.MONTH, 1);
+    calendar.add(Calendar.MONTH, 1);
     nextMonth = calendar.getTimeInMillis();
 
     calendar.setTimeInMillis(today);
@@ -79,7 +79,7 @@ private void initSettings() {
     decThisYear = calendar.getTimeInMillis();
 
     calendar.setTimeInMillis(today);
-    calendar.roll(Calendar.YEAR, 1);
+    calendar.add(Calendar.YEAR, 1);
     oneYearForward = calendar.getTimeInMillis();
 
     todayPair = new Pair<>(today, today);