Custom node icon is oversized in inspector

[DricomDragon]

Godot version

4.0.2.stable

System information

Ubuntu 20.04.6 LTS (i3wm), OpenGL API 4.6 (Core Profile) Mesa 21.2.6 - Compatibility - Using Device: Intel - Mesa Intel(R) UHD Graphics 620 (KBL GT2)

Issue description

When using a custom SVG icon for a Node that's exporting a variable, the custom icon is not scaled properly in the editor inspector.

@icon("res://icon.svg")
class_name CustomNode
extends Node2D
@export var exp_var: String = "Hello"

Does not depend on rendering backend (reproduced with Forward+ and Compatibility).

Steps to reproduce

1. Create a script exporting a custom SVG icon and exporting at least one variable
2. Restart the editor to apply custom icon
3. Open the inspector on a instantiated custom node
4. Look at the icon in the inspector

Minimal reproduction project

BugReport_EditorOversizedCustomIcon.zip

[KoBeWi]

Duplicate of #57286
The issue is fixed in 4.1-dev, but the fix might be cherry-picked to 4.0.3.