### 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
o.op = OP_BIT_XOR;
					break;
				case TK_QUESTION:
					o.op = OP_SELECT_IF;
					break;
				case TK_COLON:
					o.op = OP_SELECT_ELSE;
					break;
				default: {
					_set_error(vformat(RTR("Invalid token for the operator: '%s'."), get_token_text(tk)));
					return nullptr;
				}
			}
			expression.push_back(o);
		} else {
			_set_tkpos(pos); 
			break;
		}
	}
	
	while (expression.size() > 1) {
		int next_op = -1;
		int min_priority = 0xFFFFF;
		bool is_unary = false;
		bool is_ternary = false;
		for (int i = 0; i < expression.size(); i++) {
			if (!expression[i].is_op) {
				continue;
			}
			bool unary = false;