Describe your issue

When we pick a date in the past and then again try to add a new date, it just throws an error:
_AssertionError ('package:flutter/src/material/date_picker.dart': Failed assertion: line 197 pos 5: 'initialDate == null || !initialDate.isBefore(firstDate)': initialDate 2024-12-26 00:00:00.000 must be on or after firstDate 2024-12-27 00:00:00.000.)

Steps to reproduce

Add Task
Pick a past time
Then pick correct timethe

What was the expected result?

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