### 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
String result;
	switch (p_hint) {
		case ShaderNode::Uniform::HINT_RANGE: {
			result = "hint_range";
		} break;
		case ShaderNode::Uniform::HINT_SOURCE_COLOR: {
			result = "source_color";
		} break;
		case ShaderNode::Uniform::HINT_NORMAL: {
			result = "hint_normal";
		} break;
		case ShaderNode::Uniform::HINT_ROUGHNESS_NORMAL: {
			result = "hint_roughness_normal";
		} break;
		case ShaderNode::Uniform::HINT_ROUGHNESS_R: {
			result = "hint_roughness_r";
		} break;
		case ShaderNode::Uniform::HINT_ROUGHNESS_G: {
			result = "hint_roughness_g";
		} break;
		case ShaderNode::Uniform::HINT_ROUGHNESS_B: {
			result = "hint_roughness_b";
		} break;
		case ShaderNode::Uniform::HINT_ROUGHNESS_A: {
			result = "hint_roughness_a";
		} break;