[Bug] Jump to Today doesn't have a visual clue

### Bug Description

### How to Reproduce

Create a calendar
Go to May
Then press Today
I don't know which date is Today. Actually, it's just my window is too small. I need to manually scroll down a bit to see that 28 is highlighted

### Expected Behavior

I'm able to view which date is highlighted after clicking on Today

### Operating System

MacOS

### AppFlowy Version(s)

Main branch

### Screenshots

_No response_

### Additional Context

_No response_