### 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
int i = 0;
	while (builtin_func_out_args[i].name) {
		if (p_name == builtin_func_out_args[i].name) {
			for (int j = 0; j < BuiltinFuncOutArgs::MAX_ARGS; j++) {
				int arg = builtin_func_out_args[i].arguments[j];
				if (arg == p_param) {
					return true;
				}
				if (arg < 0) {
					return false;
				}
			}
		}
		i++;
	}
	return false;
}
#ifdef DEBUG_ENABLED
void ShaderLanguage::_check_warning_accums() {