VisualShader: Naming Texture2DParameter "AO" breaks shader

### Tested versions

4.4 dev6

### System information

Godot v4.4.dev6 - Windows 10.0.19045 - Multi-window, 1 monitor - Vulkan (Forward+) - dedicated AMD Radeon RX 580 2048SP (Advanced Micro Devices, Inc.; 31.0.21921.1000) - Intel(R) Core(TM) i5-7500 CPU @ 3.40GHz (4 threads)

### Issue description

Naming texture2DParameter "AO" breaks the shader, as seen in the first image. Second image is the same node setup with the name changed.



### Steps to reproduce

Texture2DParameter connected to samplerPort, name Texture2DParameter "AO"

### Minimal reproduction project (MRP)

Any project

Start by reproducing the issue in a minimal Godot project with a VisualShader Texture2DParameter connected to samplerPort and named "AO". Compare the generated shader with the same node using a different name; done means the "AO" name no longer produces a broken shader.

Written by the indexing model from the issue text.