Error about deferred method call is printed when opening the TextureRegion editor

[Calinou]

Tested versions

• Reproducible in: 4.3.dev.0bcc0e92b
• Not reproducible in: 4.2.1.stable

System information

Godot v4.3.dev (0bcc0e9) - Fedora Linux 39 (KDE Plasma) - X11 - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 4090 (nvidia; 545.29.06) - 13th Gen Intel(R) Core(TM) i9-13900K (32 Threads)

Issue description

An error about deferred method call is printed every time you open the TextureRegion editor:

ERROR: Error calling deferred method: 'TextureRegionEditor::TextureRegionEditor::_pan_callback': Method expected 2 arguments, but called with 1.
   at: _call_function (core/object/message_queue.cpp:223)

Steps to reproduce

Create a Sprite2D node with a GradientTexture2D, enable Region on it and click Edit Region in the inspector.

Minimal reproduction project (MRP)

N/A