fix(timeRangeSelector): Allow selecting today's UTC date

With UTC enabled, the absolute date range picker still capped the
calendar at the local `new Date()`. When the local date was a day
behind UTC, today's UTC date was disabled and could not be picked.

Convert the max date with `getUtcToSystem` when `utc` is set, the
same conversion the selector already applies to the start and end
dates.

static/app/components/timeRangeSelector/dateRange.tsx

@@ -16,6 +16,7 @@ import {trackAnalytics} from 'sentry/utils/analytics';
 import {
   getEndOfDay,
   getStartOfPeriodAgo,
+  getUtcToSystem,
   isValidTime,
   setDateToTime,
 } from 'sentry/utils/dates';
@@ -195,7 +196,7 @@ class BaseDateRange extends Component<Props, State> {
     // (or really, Jan 2 @ 00:00:00 - 1 second), while the start time is at 00:00
     let minDate = getStartOfPeriodAgo('days', (maxPickableDays ?? MAX_PICKABLE_DAYS) - 1);
 
-    let maxDate = new Date();
+    let maxDate = utc ? getUtcToSystem(new Date()) : new Date();
 
     // if the start and end date are the same, it means the user can still select another date,
     // at this point we want to apply the maxDateRange