Dragging scheduled post to different date should preserve original time

[bobchao]

📜 Description

When dragging a scheduled post from one date to another date in the calendar, the post's scheduled time is automatically changed to 23:59 (11:59 PM), overwriting the originally set time.

This behavior is unexpected and inconvenient, as (I believe) users would typically want to keep the same time when moving a post to a different date. For example, if a post is scheduled for 9:00 AM on one day and gets moved to another day, it should remain at 9:00 AM on the new date, not change to 23:59.

👟 Reproduction steps

1. Schedule a post for a specific date and time (e.g., November 7 at 9:00 AM)
2. Open the calendar view in Postiz
3. Drag the scheduled post from November 7 to a different date (e.g., November 8)
4. Check the scheduled time of the post on the new date

👍 Expected behavior

Post scheduled for November 7 at 9:00 AM → dragged to November 8 → becomes November 8 at 9:00 AM

👎 Actual Behavior with Screenshots

Post scheduled for November 7 at 9:00 AM → dragged to November 8 → becomes November 8 at 23:59

💻 Operating system

Linux

🤖 Node Version

v20.18.1

📃 Provide any additional context for the Bug.

No response

👀 Have you spent some time to check if this bug has been raised before?

• I checked and didn't find similar issue

Are you willing to submit PR?

None