### 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
func_node->body = alloc_node<BlockNode>();
				func_node->body->parent_function = func_node;
				tk = _get_token();
				while (true) {
					if (tk.type == TK_PARENTHESIS_CLOSE) {
						break;
					}
#ifdef DEBUG_ENABLED
					keyword_completion_context = CF_CONST_KEYWORD | CF_FUNC_DECL_PARAM_SPEC | CF_PRECISION_MODIFIER | CF_FUNC_DECL_PARAM_TYPE; 
					if (_lookup_next(next)) {
						if (next.type == TK_CONST) {
							keyword_completion_context = CF_UNSPECIFIED;
						} else if (is_token_arg_qual(next.type)) {
							keyword_completion_context = CF_CONST_KEYWORD;
						} else if (is_token_precision(next.type)) {
							keyword_completion_context = (CF_CONST_KEYWORD | CF_FUNC_DECL_PARAM_SPEC | CF_FUNC_DECL_PARAM_TYPE);
						} else if (is_token_datatype(next.type)) {
							keyword_completion_context = (CF_CONST_KEYWORD | CF_FUNC_DECL_PARAM_SPEC | CF_PRECISION_MODIFIER);
						}
					}
#endif 
					bool param_is_const = false;
					if (tk.type == TK_CONST) {
						param_is_const = true;
						tk = _get_token();
#ifdef DEBUG_ENABLED
						if (keyword_completion_context & CF_CONST_KEYWORD) {
							keyword_completion_context ^= CF_CONST_KEYWORD;
						}
						if (_lookup_next(next)) {