bug: rich text editor placeholder overlap with one empty list item

[xiaohanyu]

Description

The placeholder in rich text editor will collide with an list if the list only contains an empty list item.

To Reproduce

1. Create a new resume
2. Type in a dash - and then space

Actual Behavior

2025-03-23_12-55-14.mp4

Expected Behavior

The placeholder should not collide with the list item

[Optional] Screenshots

NA

Additional Context

NA