### Godot version

4.0.beta14

### System information

windows 10, gles 3, nvidia graphics

### Issue description

SCREEN_TEXTURE  was dropped in beta 14. The suggested replacement is to use ```uniform sampler2D SCREEN_TEXTURE : hint_screen_texture, filter_linear_mipmaps;```, but filter_linear_mipmaps is not recognized as a valid shader type hint and a shader using it fails to compile.

### Steps to reproduce

Create a canvas item shader and use the filter_linear_mipmaps type hint with a sampler2D uniform.

### Minimal reproduction project

N/A
for (int i = expr_pos - 1; i >= next_op; i--) {
				OperatorNode *op = alloc_node<OperatorNode>();
				op->op = expression[i].op;
				if ((op->op == OP_INCREMENT || op->op == OP_DECREMENT) && !_validate_assign(expression[i + 1].node, p_function_info)) {
					_set_error(RTR("Can't use increment/decrement operator in a constant expression."));
					return nullptr;
				}
				op->arguments.push_back(expression[i + 1].node);
				expression.write[i].is_op = false;
				expression.write[i].node = op;
				if (!_validate_operator(op, &op->return_cache, &op->return_array_size)) {
					String at;
					for (int j = 0; j < op->arguments.size(); j++) {
						if (j > 0) {
							at += ", ";
						}
						at += get_datatype_name(op->arguments[j]->get_datatype());
						if (!op->arguments[j]->is_indexed() && op->arguments[j]->get_array_size() > 0) {
							at += "[";
							at += itos(op->arguments[j]->get_array_size());
							at += "]";
						}
					}
					_set_error(vformat(RTR("Invalid arguments to unary operator '%s': %s."), get_operator_text(op->op), at));
					return nullptr;
				}
				expression.remove_at(i + 1);
			}
		} else if (is_ternary) {