### 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
if (r_message) {
				*r_message = RTR("Assignment to uniform.");
			}
			return false;
		}
		if (shader->constants.has(var->name) || var->is_const) {
			if (r_message) {
				*r_message = RTR("Constants cannot be modified.");
			}
			return false;
		}
		if (!(p_function_info.built_ins.has(var->name) && p_function_info.built_ins[var->name].constant)) {
			return true;
		}
	} else if (p_node->type == Node::TYPE_ARRAY) {
		ArrayNode *arr = static_cast<ArrayNode *>(p_node);
		if (shader->constants.has(arr->name) || arr->is_const) {
			if (r_message) {
				*r_message = RTR("Constants cannot be modified.");
			}
			return false;
		}
		return true;
	}
	if (r_message) {
		*r_message = "Assignment to constant expression.";
	}
	return false;
}
bool ShaderLanguage::_propagate_function_call_sampler_uniform_settings(StringName p_name, int p_argument, TextureFilter p_filter, TextureRepeat p_repeat) {