Fixed the birthday selection box for February #29542
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Fixed the birthday selection box for February. Currently (as shown in the GIF), leap years are determined incorrectly: leap years don’t have the 29th day, while non-leap years do. If you try to select that date, nothing happens because the logic in Telegram/SourceFiles/data/data_birthday.cpp is correct and prevents setting an invalid date.

Now everything should display correctly.