### 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
switch (p_type) {
		case IdentifierType::IDENTIFIER_CONSTANT:
			if (HAS_WARNING(ShaderWarning::UNUSED_CONSTANT_FLAG) && used_constants.has(p_identifier)) {
				used_constants[p_identifier].used = true;
			}
			break;
		case IdentifierType::IDENTIFIER_VARYING:
			if (HAS_WARNING(ShaderWarning::UNUSED_VARYING_FLAG) && used_varyings.has(p_identifier)) {
				if (shader->varyings[p_identifier].stage != ShaderNode::Varying::STAGE_VERTEX && shader->varyings[p_identifier].stage != ShaderNode::Varying::STAGE_FRAGMENT) {
					used_varyings[p_identifier].used = true;
				}
			}
			break;
		case IdentifierType::IDENTIFIER_UNIFORM:
			if (HAS_WARNING(ShaderWarning::UNUSED_UNIFORM_FLAG) && used_uniforms.has(p_identifier)) {
				used_uniforms[p_identifier].used = true;
			}
			break;
		case IdentifierType::IDENTIFIER_FUNCTION:
			if (HAS_WARNING(ShaderWarning::UNUSED_FUNCTION_FLAG) && used_functions.has(p_identifier)) {