inconsistent line height or button height in editor

### Tested versions

4.6.rc1

### System information

Ubuntu 22.04 (Not OS-specific)

### Issue description

Line height in the right sidebar is inconsistent. This leads to inconsistent button height. When hovers over you'll find buttons in the first row ("create", "load", "save", "options", "history") are shorter and buttons in the second row ("doc") are higher. (expect all the buttons in row 1~3 to be square)

I think this is a bug because buttons in the left and the middle in this picture are all square and this design is a bit strange. If not I'll create a proposal.

### Steps to reproduce

1. Open Godot 4.6.rc1
2. Create an empty project
3. Add a Node2D and select it

### Minimal reproduction project (MRP)

N/A

Reproduce the inconsistent line and button heights in the Godot 4.6.rc1 editor by following the listed steps and inspecting the right sidebar after selecting a Node2D. Compare the first three button rows with the square buttons shown elsewhere; done means the affected buttons have consistent square dimensions.

Written by the indexing model from the issue text.