### 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
arg_name += "[";
				arg_name += itos(args3[i]);
				arg_name += "]";
			}
			arg_list += arg_name;
		}
		_set_error(vformat(RTR("Invalid arguments for the built-in function: \"%s(%s)\"."), String(name), arg_list));
		return false;
	}
	
	StringName exclude_function;
	BlockNode *block = p_block;
	while (block) {
		if (block->parent_function) {
			exclude_function = block->parent_function->name;
		}
		block = block->parent_block;
	}
	if (name == exclude_function) {
		_set_error(RTR("Recursion is not allowed."));
		return false;
	}
	int last_arg_count = 0;
	String arg_list = "";
	for (int i = 0; i < shader->functions.size(); i++) {
		if (name != shader->functions[i].name) {
			continue;
		}
		if (!shader->functions[i].callable) {
			_set_error(vformat(RTR("Function '%s' can't be called from source code."), String(name)));