Small fixes on Today

Fixed

• Today: On iOS 26, the notifications button is now a round Liquid Glass button, like other iPhone buttons.
• Today: The "Day D of 5" label is gone. It used a letter to show your place in the routine, which was hard to understand.
• Up next: Each day now starts with an icon for its type (workout, rest or cardio) instead of a letter.
• Up next: On a rest day, if the next day is also a rest day, it now says "Rest · Next" instead of "Rest · After rest".