message: fix(common): fallback to last defined value for named date and time formats
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diff: @@ -253,7 +253,7 @@ export function getLocaleWeekEndRange(locale: string): [WeekDay, WeekDay] {
  */
  export function getLocaleDateFormat(locale: string, width: FormatWidth): string {
  const data = findLocaleData(locale);
  - return data[LocaleDataIndex.DateFormat][width];
  + return getLastDefinedValue(data[LocaleDataIndex.DateFormat], width);
  }
  /**
  @@ -278,7 +278,7 @@ export function getLocaleDateFormat(locale: string, width: FormatWidth): string
  */
  export function getLocaleTimeFormat(locale: string, width: FormatWidth): string {
  const data = findLocaleData(locale);
  - return data[LocaleDataIndex.TimeFormat][width];
  + return getLastDefinedValue(data[LocaleDataIndex.TimeFormat], width);
  }
  /**
  