### 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
OperatorNode *func = alloc_node<OperatorNode>();
				func->op = OP_EMPTY;
				expr = func;
			}
			if (!valid) {
				if (tk.type != TK_SEMICOLON) {
					_set_error(vformat(RTR("Expected expression, found: '%s'."), get_token_text(tk)));
					return nullptr;
				} else {
#ifdef DEBUG_ENABLED
					if (!p_block || (p_block->block_type != BlockNode::BLOCK_TYPE_FOR_INIT && p_block->block_type != BlockNode::BLOCK_TYPE_FOR_CONDITION)) {
						if (check_warnings && HAS_WARNING(ShaderWarning::FORMATTING_ERROR_FLAG)) {
							_add_line_warning(ShaderWarning::FORMATTING_ERROR, RTR("Empty statement. Remove ';' to fix this warning."));
						}
					}
#endif 
					_set_tkpos(prepos);
					OperatorNode *func = alloc_node<OperatorNode>();
					func->op = OP_EMPTY;
					expr = func;
				}
			}
		}
		ERR_FAIL_COND_V(!expr, nullptr);
		
		while (true) {
			TkPos pos2 = _get_tkpos();
			tk = _get_token();
			if (tk.type == TK_CURSOR) {