Focus highlight still apperaring on scene tree widget

[giokhmaladze]

Tested versions

• Reproducable in: 4.6.dev6

System information

Godot v4.6.dev6 - Fedora Linux 43 (Workstation Edition) on Wayland - Wayland display driver, Multi-window, 1 monitor - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 2060 (nvidia; 580.105.08) - AMD Ryzen 5 3600XT 6-Core Processor (12 threads) - 15.50 GiB memory

Issue description

Visual/Stylistic issue, After overhauling editor's design functionality of widgets' focus highlighting have been removed, it still appears when you press F2 (to rename) selected node on scene tree widget. This behavior is inconsistent to other widgets with similar functionalities. Also it only happens when you rename with pressing F2 not when you double click on label

Steps to reproduce

1. Select scene with node
2. Select node
3. Press F2
   • ⚠️ Observe highlighting
   • Error logged: ERROR: editor/scene/scene_tree_editor.cpp:1651 - Parameter "which" is null.

https://github.com/user-attachments/assets/115b7b03-2df7-4881-ab34-c16f04aa2497

Minimal reproduction project (MRP)