1283384 - Implement UI for <input type="time">

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[Rockridge]

Fx52：<input type="time">が指定されている場合の入力UIが実装された。参照：https://bug1283384.bmoattachments.org/attachment.cgi?id=8782790 / デフォルト無効。dom.forms.datetimeをtrueにする必要あり。