### Godot version

4.0.3

### System information

Win7

### Issue description

![image](https://github.com/godotengine/godot/assets/28286958/abec9d3c-e078-424c-9430-d9fe8897aad6)


### Steps to reproduce

1. Create shader
2. Add uint with hex, e.g. 0xffffu

### Minimal reproduction project

N/A
int idx = 0;
#define GETCHAR(m_idx) (((idx + m_idx) < p_code.length()) ? p_code[idx + m_idx] : char32_t(0))
	while (true) {
		if (GETCHAR(0) == '/' && GETCHAR(1) == '/') {
			idx += 2;
			while (true) {
				if (GETCHAR(0) == 0) {
					return 0;
				}
				if (GETCHAR(0) == '\n') {
					idx++;
					break; 
				}