### Godot version

4.0.stable.mono

### System information

Windows 10, NVIDIA RTX 2060 (Driver 30.0.14.7284), Vulkan 1.2.175 Forward+ (Editor)

### Issue description

When changing certain Global Shader Parameters (in this case, a mat4) in the Project Settings, the value sent to the editor 3D view appears to be undefined, resulting in garbage values sent to the shaders.

As an example here, I'm using a mat4 to describe global light directions for a lighting shader
Note that the shader receives a different value even when the editor is being set to the same values
https://user-images.githubusercontent.com/44537737/222551889-b7c7ca63-ef65-484c-818f-c6ce47a7d3c0.mp4

Setting the global parameter from a script does pass the correct value to the shaders
![image](https://user-images.githubusercontent.com/44537737/222552338-14582898-a76d-4ec4-b877-7b822e414901.png)

I have also determined the shaders in the editor also do not get correct values from the `project.godot` when loading the project.

### Steps to reproduce

- Create a Global Shader Parameter of mat4 type (Project > Project Settings... > Shader Globals)
- Create a shader that visualizes the value of the mat4 (`global uniform mat4 global_mat`)
- Attempt to modify the global in the same Project Settings menu, the shader will receive garbage values

### Minimal reproduction project

[GlobalShaderParameters.zip](https://github.com/godotengine/godot/files/10875801/GlobalShaderParameters.zip)

if (tk.type != TK_SEMICOLON) {
						_set_expected_error(";");
						return ERR_PARSE_ERROR;
					}
#ifdef DEBUG_ENABLED
					keyword_completion_context = CF_GLOBAL_SPACE;
#endif 
					completion_type = COMPLETION_NONE;
					current_uniform_hint = ShaderNode::Uniform::HINT_NONE;
					current_uniform_filter = FILTER_DEFAULT;
					current_uniform_repeat = REPEAT_DEFAULT;
					current_uniform_instance_index_defined = false;
				} else { 
					ShaderNode::Varying varying;
					varying.type = type;
					varying.precision = precision;
					varying.interpolation = interpolation;
					varying.tkpos = prev_pos;
					varying.array_size = array_size;
					tk = _get_token();
					if (tk.type != TK_SEMICOLON && tk.type != TK_BRACKET_OPEN) {
						if (array_size == 0) {
							_set_expected_error(";", "[");
						} else {
							_set_expected_error(";");
						}
						return ERR_PARSE_ERROR;
					}
					if (tk.type == TK_BRACKET_OPEN) {
						Error error = _parse_array_size(nullptr, constants, true, nullptr, &varying.array_size, nullptr);