Awkward gap in Create New Scene dialog

[KoBeWi]

Tested versions

4.3 beta 2fb296a
Does not appear as big in beta1

System information

Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1060 (NVIDIA; 31.0.15.4633) - Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz (8 Threads)

Issue description

Seems to come from button being big:

In beta1 the gap is also there, but noticeably smaller:

Perfectly, the LineEdit should be aligned with above labels.

Steps to reproduce

1. Create new scene from FileSystem dock

Minimal reproduction project (MRP)

N/A

[passivestar]

Kind of a same problem with a checkbox here I guess:

[KoBeWi]

Seems to be caused by #92701
CC @bruvzg