### 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
static const char *op_names[OP_MAX] = { "==",
		"!=",
		"<",
		"<=",
		">",
		">=",
		"&&",
		"||",
		"!",
		"-",
		"+",
		"-",
		"*",
		"/",
		"%",
		"<<",
		">>",
		"=",
		"+=",
		"-=",
		"*=",
		"/=",
		"%=",
		"<<=",
		">>=",
		"&=",