Viewport rotation gizmo can no longer have its current axis clicked to reverse it

[Calinou]

• Related to Viewport Axis Controls: "Flip" Functionality godot-proposals#11497.

Tested versions

• Reproducible in: 4.3.stable
• Not reproducible in: 3.6.stable

System information

Godot v4.3.stable - Windows 10.0.22631 - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 4090 (NVIDIA; 32.0.15.6636) - 13th Gen Intel(R) Core(TM) i9-13900K (32 Threads)

Issue description

In 4.3, nothing happens when clicking the axis that is currently viewed frontally:

Recording.2025-01-05.172713.mp4

In 3.6, clicking it reverses it (e.g. you'll see X- instead of X+).

As a workaround, you can click the axis next to it twice, but this is less convenient and doesn't match Blender behavior.

Steps to reproduce

• Click on the rotation gizmo to view an axis frontally.
• Click it again, and notice that nothing happens (it should get reversed instead, i.e. you view the same axis from behind).

Minimal reproduction project (MRP)

N/A

[ryevdokimov]

Regression from: #76052

Should be fixed by above linked PR.