### 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)

is_const_suffix_lut_initialized = true;
						for (int i = 0; i < 127; i++) {
							char t = char(i);
							suffix_lut[CASE_ALL][i] = t == '.' || t == 'x' || t == 'e' || t == 'f' || t == 'u' || t == '-' || t == '+';
							suffix_lut[CASE_HEXA_PERIOD][i] = t == 'e' || t == 'f';
							suffix_lut[CASE_EXPONENT][i] = t == 'f' || t == '-' || t == '+';
							suffix_lut[CASE_SIGN_AFTER_EXPONENT][i] = t == 'f';
							suffix_lut[CASE_NONE][i] = false;
						}
					}
					String str;
					int i = 0;
					bool digit_after_exp = false;
					while (true) {
						const char32_t symbol = String::char_lowercase(GETCHAR(i));
						bool error = false;
						if (is_digit(symbol)) {
							if (exponent_found) {
								digit_after_exp = true;
							}
							if (end_suffix_found) {
								error = true;
							}
						} else {
							if (symbol < 0x7F && suffix_lut[lut_case][symbol]) {
								if (symbol == 'x') {
									hexa_found = true;
									lut_case = CASE_HEXA_PERIOD;
								} else if (symbol == '.') {
									period_found = true;