### 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 (error != OK) {
				return nullptr;
			}
			tk = _get_token();
		} else {
			_set_expected_error("[");
			return nullptr;
		}
	}
	ArrayConstructNode *an = alloc_node<ArrayConstructNode>();
	if (tk.type == TK_PARENTHESIS_OPEN || auto_size) { 
		int idx = 0;
		while (true) {
			Node *n = _parse_and_reduce_expression(p_block, p_function_info);
			if (!n) {
				return nullptr;
			}
			
			if (auto_size && idx == 0) {
				type = n->get_datatype();
				if (type == TYPE_STRUCT) {
					struct_name = n->get_datatype_name();
				}
			} else {
				if (!_compare_datatypes(type, struct_name, 0, n->get_datatype(), n->get_datatype_name(), 0)) {
					return nullptr;
				}
			}
			tk = _get_token();
			if (tk.type == TK_COMMA) {