### 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 (p_uniform.hint == ShaderLanguage::ShaderNode::Uniform::HINT_SOURCE_COLOR) {
					pi.type = Variant::COLOR;
				} else {
					pi.type = Variant::VECTOR4;
				}
			}
		} break;
		case ShaderLanguage::TYPE_MAT2:
			if (p_uniform.array_size > 0) {
				pi.type = Variant::PACKED_FLOAT32_ARRAY;
			} else {
				pi.type = Variant::TRANSFORM2D;
			}
			break;
		case ShaderLanguage::TYPE_MAT3:
			if (p_uniform.array_size > 0) {
				pi.type = Variant::PACKED_FLOAT32_ARRAY;
			} else {
				pi.type = Variant::BASIS;
			}
			break;
		case ShaderLanguage::TYPE_MAT4:
			if (p_uniform.array_size > 0) {
				pi.type = Variant::PACKED_FLOAT32_ARRAY;
			} else {
				pi.type = Variant::PROJECTION;
			}
			break;
		case ShaderLanguage::TYPE_SAMPLER2D:
		case ShaderLanguage::TYPE_ISAMPLER2D: