### 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
uniform.type = type;
					uniform.scope = uniform_scope;
					uniform.precision = precision;
					uniform.array_size = array_size;
					uniform.group = current_uniform_group_name;
					uniform.subgroup = current_uniform_subgroup_name;
					tk = _get_token();
					if (tk.type == TK_BRACKET_OPEN) {
						Error error = _parse_array_size(nullptr, constants, true, nullptr, &uniform.array_size, nullptr);
						if (error != OK) {
							return error;
						}
						tk = _get_token();
					}
					if (is_sampler_type(type)) {
						if (uniform_scope == ShaderNode::Uniform::SCOPE_INSTANCE) {
							_set_error(vformat(RTR("The '%s' qualifier is not supported for sampler types."), "SCOPE_INSTANCE"));
							return ERR_PARSE_ERROR;
						}
						uniform.texture_order = texture_uniforms++;
						uniform.texture_binding = texture_binding;
						if (uniform.array_size > 0) {
							texture_binding += uniform.array_size;
						} else {
							++texture_binding;
						}
						uniform.order = -1;
					} else {
						if (uniform_scope == ShaderNode::Uniform::SCOPE_INSTANCE && (type == TYPE_MAT2 || type == TYPE_MAT3 || type == TYPE_MAT4)) {
							_set_error(vformat(RTR("The '%s' qualifier is not supported for matrix types."), "SCOPE_INSTANCE"));