### 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
}
			tk = _get_token();
			if (tk.type != TK_PARENTHESIS_OPEN) {
				_set_expected_after_error("(", "while");
				return ERR_PARSE_ERROR;
			}
			ControlFlowNode *cf = alloc_node<ControlFlowNode>();
			if (is_do) {
				cf->flow_op = FLOW_OP_DO;
			} else {
				cf->flow_op = FLOW_OP_WHILE;
			}
			Node *n = _parse_and_reduce_expression(p_block, p_function_info);
			if (!n) {
				return ERR_PARSE_ERROR;
			}
			tk = _get_token();
			if (tk.type != TK_PARENTHESIS_CLOSE) {
				_set_expected_error(")");
				return ERR_PARSE_ERROR;
			}
			if (!is_do) {
				BlockNode *block = alloc_node<BlockNode>();
				block->parent_block = p_block;
				cf->expressions.push_back(n);
				cf->blocks.push_back(block);
				p_block->statements.push_back(cf);
				Error err = _parse_block(block, p_function_info, true, true, true);
				if (err) {
					return err;