Rendering order list is too small if other sections are expanded

[Rabbit-sk]

Hi RealThunder!

The rendering order list shrinks when multiple sections are expanded. This is very impractical for reordering.
This list should always be high enough to make all items visible without scrolling.

OS: Windows 10 Version 2009
Word size of FreeCAD: 64-bit
Version: 2022.111.30764 (Git)
Build type: Release
Branch: LinkDaily
Hash: ef3092bcbca5475eff4eb7ff7933eb3e9bbbe4b9
Python version: 3.8.6+
Qt version: 5.15.2
Coin version: 4.0.1
OCC version: 7.6.0
Locale: Slovak/Slovakia (sk_SK)

[Rabbit-sk]

It's better, but it would be good to increase the height of the list a bit more.

2022-04-09.11-35-05.mp4

The list should be as high as here with one blank line:

so drag and drop while reordering the list does not lead to scroll the list like here:

2022-04-09.12-04-47.mp4

OS: Windows 10 Version 2009
Word size of FreeCAD: 64-bit
Version: 2022.407.26244 +4693 (Git)
Build type: Release
Branch: LinkDaily
Hash: 9610830a8fd492b3b3d96f8328507c80f1437cda
Python version: 3.8.6+
Qt version: 5.15.2
Coin version: 4.0.1
OCC version: 7.6.0
Locale: Slovak/Slovakia (sk_SK)